Electrical engineering is a professional engineering discipline that generally deals with the study and application of electricity, electronics, and electromagnetism.This field first became an identifiable occupation in the later half of the 19th century after commercialization of the electric telegraph, the telephone, and electric power distribution and use.Electrical engineering has now subdivided into a wide range of subfields including electronics, digital computers, computer engineering, power engineering, telecommunications, control systems, radio-frequency engineering, signal processing, instrumentation, and microelectronics.Electrical engineers typically hold a degree in electrical engineering or electronic engineering. Practicing engineers may have professional certification and be members of a professional body.Electrical engineers work in a very wide range of industries and the skills required are likewise variable. These range from basic circuit theory to the management skills required of a project manager. Just follow the Mcqs online quiz being dispatched over here with respect to your preparation for entry admission test NTS PPSC OTS PTS and missllenous job exams simultaneously.
Here we have large collection of Electrical Engineering Mcqs for all Students and jobs test preparation purpose. These Electrical Engineering Mcqs will be updated on daily basis and added more multiple choice question about Electrical Engineering frequently.You can prepare your Electrical Engineering Subject for different classes like 9th class, 10th class ,11th class 12th class exams, Entry Test like MCAT NTS ,OTS ,PTS ,BTS, GTS, Jobs Test,Recruitment Test like PPSC CSS FPSC SPSC KPPSC and interviews here.
Electrical Engineering Mcqs Online With Answers for NTS PPSC PTS Entry Test Classes
Electrical Engineering
Electrical Engineering Mcqs with Answers Solved
Why are load flow studies carried out?
A. To study of stability of the system
B. For fault calculations
C. For planning the power system
D. All of these
Right Answer: C. For planning the power system
Tell us how can we improve this Mcqs?
Which part of the tower is buried in the ground?
A. Anchor
B. Guy wire
C. Braces
D. Strut inclined support
Right Answer: A. Anchor
Tell us how can we improve this Mcqs?
How are the zero sequence and negative sequence networks connected in case of LLG faults?
A. Parallel
B. Series
C. Can be connected in either way
D. Such type of connection does not exist
Right Answer: A. Parallel
Tell us how can we improve this Mcqs?
The dielectric strength of air gap is?
A. 2.11kV/cm
B. 21.1kV/m
C. 21.1kV/cm
D. 2.11kV/m
Right Answer: C. 21.1kV/cm
Tell us how can we improve this Mcqs?
What is the maximum voltage that XLPE cables can withstand?
A. 65 ° C
B. 80 ° C
C. 110 ° C
D. 130 ° C
Right Answer: D. 130 ° C
Tell us how can we improve this Mcqs?
The Schering bridges can be used at?
A. low voltage
B. high voltage
C. medium voltage
D. Both a and b
Right Answer: D. Both a and b
Tell us how can we improve this Mcqs?
What is the source of heat generation in cables?
A. Copper loss in conductor
B. Dielectric losses in cable insulation
C. Losses in metallic sheathings and armouring
D. All of these
Right Answer: D. All of these
Tell us how can we improve this Mcqs?
If induction motor is direct switched-on then it will develop?
A. 1.5 times their full load torque
B. 1.5 to 2.5 times their full load torque
C. 2.5 times their full load torque
D. 1.5 to 5 times their full load torque
Right Answer: B. 1.5 to 2.5 times their full load torque
Tell us how can we improve this Mcqs?
The advantage of rectifier type welding set is?
A. Reduced no – load losses
B. Easy arc starting
C. Less hazardous
D. Both a and b
Right Answer: D. Both a and b
Tell us how can we improve this Mcqs?
With the use of high speed circuit breakers, which among the following stability is increased?
A. Steady state stability
B. Transient stability
C. Frequency stability
D. All of these
Right Answer: B. Transient stability
Tell us how can we improve this Mcqs?
Which insulating material is used for low voltage cables?
A. Impregnated paper
B. Rubber
C. Silk and cotton
D. Vulcanised Indian rubber
Right Answer: C. Silk and cotton
Tell us how can we improve this Mcqs?
Lux is the unit of?
A. Luminous flux
B. Luminous intensity
C. Illumination
D. Luminance
Right Answer: C. Illumination
Tell us how can we improve this Mcqs?
The charging current drawn by the cable?
A. Lags behind the voltage by 90°
B. Leads the voltage by 90°
C. Are in phase with each other
D. Leads the voltage by 60°
Right Answer: B. Leads the voltage by 90°
Tell us how can we improve this Mcqs?
The power curve for a purely resistive circuit is zero only when?
A. Current is zero
B. Voltage is zero
C. Both current and voltage is zero
D. None of these
Right Answer: C. Both current and voltage is zero
Tell us how can we improve this Mcqs?
Buzzer in principle is a bell?
A. with hammer
B. with gong
C. with both hammer and gong
D. without hammer and gong
Right Answer: D. without hammer and gong
Tell us how can we improve this Mcqs?
Why is the transmission lines transposed?
A. Reduce corona loss
B. Reduce skin effect
C. Prevent interference with the neighbouring telephone lines
D. Prevent short circuit between any two lines
Right Answer: C. Prevent interference with the neighbouring telephone lines
Tell us how can we improve this Mcqs?
The rating of the circuit breaker is usually determined on the basis of ____________ fault.
A. Symmetrical
B. Line to line
C. Single line to ground
D. Double line to ground
Right Answer: A. Symmetrical
Tell us how can we improve this Mcqs?
If an extra resistance is connected in the rotor circuit of slip ring induction motor, then?
A. Starting current and torque decreases
B. Starting current increases and torque decreases
C. Starting current decreases and torque increases
D. Starting current and torque increases
Right Answer: C. Starting current decreases and torque increases
Tell us how can we improve this Mcqs?
The thickness of insulation provided on the conductor in the cable depends on which among the following factor?
A. Operating voltage
B. Current to be carried
C. Power factor
D. Both a and b
Right Answer: A. Operating voltage
Tell us how can we improve this Mcqs?
Resins and varnishes are commonly used in?
A. Generators and motors
B. Cables
C. Transformers
D. Circuit breakers
Right Answer: A. Generators and motors
Tell us how can we improve this Mcqs?
Which among these is a part of HVDC link?
A. Two earth electrodes
B. Converter valves
C. Bipolar DC line
D. All of these
Right Answer: D. All of these
Tell us how can we improve this Mcqs?
The making and breaking currents of a 3 phase ac circuit breakers in power systems are respectively in ________form.
A. rms value, rms value
B. instantaneous value, rms value
C. rms value, instantaneous value
D. instantaneous value, instantaneous value
Right Answer: D. instantaneous value, instantaneous value
Tell us how can we improve this Mcqs?
What is the expression for the amplitude of the reflected wave?
A. Ir = [ (R + Z) / (R – Z) ] It
B. Ir = [ (R – Z) / Z ] It
C. Ir = [ (R – Z) / (R + Z) ] It
D. Ir = [ (R + Z) / Z ] It
Right Answer: C. Ir = [ (R – Z) / (R + Z) ] It
Tell us how can we improve this Mcqs?
In a three phase transformer, the angle between two consecutive cores is?
A. 30 degree
B. 60 degree
C. 120 degree
D. 160 degree
Right Answer: C. 120 degree
Tell us how can we improve this Mcqs?
In HRC fuses, the space within the body surrounding the element is usually filled with?
A. Silver
B. Zinc
C. Quartz
D. Copper
Right Answer: C. Quartz
Tell us how can we improve this Mcqs?
An SCR can be used?
A. as static conductor
B. for power control
C. for speed control of dc shunt motor
D. All of these
Right Answer: D. All of these
Tell us how can we improve this Mcqs?
To detect an over – current fault condition, the most reliable method is to connect a?
A. Current sensor across IGBT
B. Voltage sensor across IGBT
C. Current sensor in series with IGBT
D. Voltage sensor in series with IGBT
Right Answer: Current sensor in series with IGBT
Tell us how can we improve this Mcqs?
Reduced voltage can be applied across the stator circuit by?
A. Using an autotransformer
B. Connecting resistor in series with stator winding
C. Connecting inductor in series with stator winding
D. All of these
Right Answer: D. All of these
Tell us how can we improve this Mcqs?
In cell, the current flows in outer circuit from?
A. Positive terminal to negative terminal and electrons from negative terminal to positive terminal
B. Positive terminal to negative terminal and electrons from positive terminal to negative terminal
C. Negative terminal to positive terminal and electrons from negative terminal to positive terminal
D. Negative terminal to positive terminal and electrons from positive terminal to negative terminal
Right Answer: A. Positive terminal to negative terminal and electrons from negative terminal to positive terminal
Tell us how can we improve this Mcqs?
An ideal diode is?
A. Unidirectional
B. Bidirectional
C. Fixed voltage polarity
D. Only a and c
Right Answer: D. Only a and c
Tell us how can we improve this Mcqs?
Plug setting of a electromagnetic relay can be altered by varying?
A. Number of ampere turns
B. Air gap of magnetic path
C. Adjustable back stop
D. None of these
Right Answer: A. Number of ampere turns
Tell us how can we improve this Mcqs?
At what rated voltage is the shielded cable provided in a low voltage system?
A. Rated voltage < 1kV
B. Rated voltage < 500V
C. Rated voltage > 1 kV
D. Any of these
Right Answer: A. Rated voltage < 1kV
Tell us how can we improve this Mcqs?
Which among these is the cause of sparking at brushes in DC motor?
A. Defective brushes
B. Defect in Commutator
C. Excessive load
D. All of these
Right Answer: D. All of these
Tell us how can we improve this Mcqs?
The series capacitor peak voltmeter is suitable for?
A. Positive half cycle
B. Negative half cycle
C. Sinusoidal waveform
D. All of these
Right Answer: D. All of these
Tell us how can we improve this Mcqs?
Which among the following sequence is correct for a synchronous generator?
A. I”d > Id > I’d
B. Id > I’d > I”d
C. I”d > I’d > Id
D. Id > I”d > I’d
Right Answer: C. I”d > I’d > Id
Tell us how can we improve this Mcqs?
Flat rate tariff is charged on what basis?
A. Connected load
B. Units consumed
C. Maximum demand
D. All of these
Right Answer: B. Units consumed
Tell us how can we improve this Mcqs?
When a solenoid attracts an iron bar,?
A. They leave the south pole to go around to the north pole
B. They leave the north pole to go around to the south pole
C. They leave the north pole to go to infinity
D. They leave the south pole to go to the infinity
Right Answer: B. They leave the north pole to go around to the south pole
Tell us how can we improve this Mcqs?
What will be the value of IC, if Ia1 = 100 ∠ 30° and Ib2 = 20 ∠ 90°?
A. 111.35 ∠ 21.05 °
B. 111.35 ∠ 15.05°
C. 111.35 ∠ 145.06°
D. 111.35 ∠ 158.94°
Right Answer: D. 111.35 ∠ 158.94°
Tell us how can we improve this Mcqs?
Bidirectional semiconductor device is?
A. Diode
B. BJT
C. SCR
D. TRIAC
Right Answer: D. TRIAC
Tell us how can we improve this Mcqs?
The resistances of potential transformer winding is minimized by using?
A. Thick conductors and small length of turns
B. Thin conductors and small length of turns
C. Thin conductors and large length of turns
D. Thick conductors and large length of turns
Right Answer: A. Thick conductors and small length of turns
Tell us how can we improve this Mcqs?
The motor which is most suitable for the traction work is / are?
A. DC series motor
B. DC shunt motor
C. Single phase ac series motor
D. Three phase induction motor
Right Answer: A. DC series motor
Tell us how can we improve this Mcqs?
With increase in temperature of the body, the emission of light waves is?
A. Increases
B. Decreases
C. Remain same
D. None of these
Right Answer: A. Increases
Tell us how can we improve this Mcqs?
Due to presence of third harmonic component in the star-star connection of three phase transformer, the frequency of the circuit component becomes?
A. Three times of the circuit frequency
B. One third of the circuit frequency
C. Remains same
D. None of these
Right Answer: A. Three times of the circuit frequency
Tell us how can we improve this Mcqs?
The switching function of semiconductor devices can be characterized with?
A. Duty ratio only
B. Frequency only
C. Duty ratio and frequency
D. Duty ratio, frequency and time delay
Right Answer: D. Duty ratio, frequency and time delay
Tell us how can we improve this Mcqs?
A trolley bus runs on tyres driven by?
A. A DC compound motor
B. A DC series motor
C. An AC series motor
D. An AC shunt motor
Right Answer: A. A DC compound motor
Tell us how can we improve this Mcqs?
When the flux crosses the air gap, it bulges outward at the ends of the air gap and the flux density in the air gap is reduced. This is known as?
A. Leakage flux
B. Fringing
C. Relative permeability
D. Magnetizing force
Right Answer: B. Fringing
Tell us how can we improve this Mcqs?
The maximum firing angle in the half wave controlled regulator is?
A. 180 degree
B. 190 degree
C. 200 degree
D. 210 degree
Right Answer: D. 210 degree
Tell us how can we improve this Mcqs?
What is the relation between the fusing current and the diameter of the wire?
A. I = k d3
B. I = k d3/2
C. I = k d2
D. I = k d2/3
Right Answer: B. I = k d3/2
Tell us how can we improve this Mcqs?
Leclanche cell Daniel cell is an example of?
A. Both dry cell
B. Both wet cell
C. dry cell, wet cell
D. wet cell, dry cell
Right Answer: B. Both wet cell
Tell us how can we improve this Mcqs?
3 – point starter is used to start the?
A. Series motor
B. Shunt motor
C. Compound motor
D. Only b and c
Right Answer: D. Only b and c
Tell us how can we improve this Mcqs?
The power absorbed by a pure inductive circuit and pure capacitive circuit is?
A. Zero and non zero
B. Non zero and zero
C. Non zero and non zero
D. Zero and zero
Right Answer: D. Zero and zero
Tell us how can we improve this Mcqs?
In electrodynamic instruments, the operating field is produced by?
A. Permanent magnet
B. Fixed coil
C. Moving coil
D. All of these
Right Answer: B. Fixed coil
Tell us how can we improve this Mcqs?
The Graetz bridge makes excellent use of?
A. Current transformer
B. Potential transformer
C. Power transformer
D. SCR
Right Answer: C. Power transformer
Tell us how can we improve this Mcqs?
For moment of inertia to be small in two phase servomotor, the ratio of rotor diameter to its length should be?
A. Equal to 1
B. Small
C. Large
D. All of these
Right Answer: B. Small
Tell us how can we improve this Mcqs?
The unit of electrical energy is / are?
A. Watt – sec
B. Joules
C. Kilowatt – hour
D. All of these
Right Answer: D. All of these
Tell us how can we improve this Mcqs?
To move electrons from valence band to conduction band, the energy applied to the insulator is?
A. Less than 15 eV
B. Equal to 15 eV
C. More than 15 eV
D. More than 25 eV
Right Answer: C. More than 15 eV
Tell us how can we improve this Mcqs?
The input current waveform of a bridge controlled rectifier when the load is perfectly filtered is?
A. Sine wave
B. Square wave
C. Saw – tooth wave
D. Trapezoidal wave
Right Answer: B. Square wave
Tell us how can we improve this Mcqs?
Which section in the IE Act deals with the ‘theft of energy’?
A. Section 39
B. Section 40
C. Section 43
D. Section 44
Right Answer: A. Section 39
Tell us how can we improve this Mcqs?
Where is the synchronous motor drive with cycloconverters used?
A. Compressors
B. Ball mills in cement plants
C. Fans
D. All of these
Right Answer: B. Ball mills in cement plants
Tell us how can we improve this Mcqs?
With gate open, the maximum anode current at which SCR is turned off from ON condition is called?
A. Breakdown voltage
B. Peak reverse voltage
C. Holding current
D. Latching current
Right Answer: C. Holding current
Tell us how can we improve this Mcqs?
The potential difference between two points is given by?
A. V = E / Q
B. V = W / Q
C. V = Q / E
D. V = Q / W
Right Answer: B. V = W / Q
Tell us how can we improve this Mcqs?
What is the main cause of voltage instability?
A. Generators
B. Transformers
C. Loads
D. Line losses
Right Answer: C. Loads
Tell us how can we improve this Mcqs?
Which device is connected in series?
A. RC surge suppressors
B. Smoothing reactors
C. Metal oxide veristors
D. Static balancer
Right Answer: B. Smoothing reactors
Tell us how can we improve this Mcqs?
On what factor does the operating speed of the relay depend?
A. Rate of flux built up
B. Armature core air gap
C. Spring tension
D. All of these
Right Answer: D. All of these
Tell us how can we improve this Mcqs?
The Laser Beam Machining process can be carried out, when the media for energy transfer between tool and workpiece is?
A. Air
B. Liquid
C. Vacuum
D. Any of the above medium
Right Answer: D. Any of the above medium
Tell us how can we improve this Mcqs?
Q meter is used to measure the properties of?
A. Inductive coils
B. Non inductive coils
C. Capacitive coils
D. Both a and c
Right Answer: D. Both a and c
Tell us how can we improve this Mcqs?
Flood lighting is used for?
A. For enhancing the beauty of building at nights
B. For illuminating sports stadium
C. For illuminating show cases
D. All of these
Right Answer: D. All of these
Tell us how can we improve this Mcqs?
Copper losses is proportional to ?
A. kVA
B. square of kVA
C. cube of kVA
D. None of these
Right Answer: B. square of kVA
Tell us how can we improve this Mcqs?
Transmission efficiency of a transmission line increases with the?
A. decrease in power factor and voltage
B. increase in power factor and voltage
C. increase in power factor but decrease in voltage
D. increase in voltage and decrease in power factor
Right Answer: B. increase in power factor and voltage
Tell us how can we improve this Mcqs?
On what basis is the selection of fuse done?
A. Steady load
B. Fluctuating load
C. Both a and b
D. None of these
Right Answer: C. Both a and b
Tell us how can we improve this Mcqs?
For large low voltage transformers, the most commonly used connections are?
A. Star – star connection
B. Delta – delta connection
C. V connection
D. All of these
Right Answer: B. Delta – delta connection
Tell us how can we improve this Mcqs?
For what voltage is the H type of poles used?
A. 22 kV
B. 130 kV
C. 11 kV
D. All of these
Right Answer: B. 130 kV
Tell us how can we improve this Mcqs?
In a 3 phase VSI out of eight valid states, the number of valid states that produce zero ac line voltages is/are?
A. One
B. Two
C. Three
D. Four
Right Answer: B. Two
Tell us how can we improve this Mcqs?
For extinguishing arc in an high voltage fuses, the element can be immersed in?
A. Oil
B. Carbon tetrachloride
C. Carbon tetrafloride
D. Only a and b
Right Answer: A. Only a and b
Tell us how can we improve this Mcqs?
Which material has a lower dielectric strength at 50 Hz?
A. Bakelite
B. Glass
C. Air
D. None of these
Right Answer: C. Air
Tell us how can we improve this Mcqs?
In a circuit breaker the contact space is ionised by what?
A. Field emission from the contact surface
B. Thermal emission from the contact surface
C. Thermal ionisation of gas
D. None of these
Right Answer: C. Thermal ionisation of gas
Tell us how can we improve this Mcqs?
What is the value of negative sequence impedance?
A. 1
B. Z
C. Same as positive sequence
D. ∞
Right Answer: C. Same as positive sequence
Tell us how can we improve this Mcqs?
Electrostatic voltmeter instruments are suitable for?
A. AC work only
B. DC work only
C. Both AC and DC work
D. None of these
Right Answer: C. Both AC and DC work
Tell us how can we improve this Mcqs?
Secondary’s cells are?
A. lead acid cell
B. alkaline cell
C. Both a and b
D. None of these
Right Answer: C. Both a and b
Tell us how can we improve this Mcqs?
AC power in a load can be controlled by using?
A. two SCR’s in parallel opposition
B. two SCR’s in series
C. three SCR’s in series
D. four SCR’s in series
Right Answer: A. two SCR’s in parallel opposition
Tell us how can we improve this Mcqs?
For carrying out parallel operation, transformers should have same X / R ratio in order to avoid?
A. Leakage reactance
B. Insulation failure
C. Circulating current
D. Inrush current
Right Answer: C. Circulating current
Tell us how can we improve this Mcqs?
If the firing angle becomes negative, then the rectifier begins to work as?
A. A rectifier
B. An inverter
C. A chopper
D. A regulator
Right Answer: B. An inverter
Tell us how can we improve this Mcqs?
The electrodes used in carbon arc welding are made up of?
A. Carbon
B. Graphite
C. Either carbon or graphite
D. Zinc
Right Answer: C. Either carbon or graphite
Tell us how can we improve this Mcqs?
The zero drift is measured in units of?
A. Volts – °C
B. Volts / °C
C. °C / volts
D. (volts)2 / °C
Right Answer: B. Volts / °C
Tell us how can we improve this Mcqs?
The electrodes used for projection welding are?
A. Flat and smaller in diameter
B. Flat and larger in diameter
C. Round and smaller in diameter
D. Round and larger in diameter
Right Answer: B. Flat and larger in diameter
Tell us how can we improve this Mcqs?
The effects of EMI can be reduced by?
A. Suppressing emissions
B. Reducing the efficiency of the coupling path
C. Reducing the susceptibility of the receptor
D. All of these
Right Answer: D. All of these
Tell us how can we improve this Mcqs?
Impurities are generally added in the pure semiconductor to?
A. increase the number of electrons
B. increase the number of holes
C. increase their conductivity
D. All of these
Right Answer: C. increase their conductivity
Tell us how can we improve this Mcqs?
In light emitting diode, the available light emitting region is ?
A. Less than 2.5 mm
B. From 2.5 to 25 mm
C. Greater than 25 mm
D. Greater than 50 mm
Right Answer: B. From 2.5 to 25 mm
Tell us how can we improve this Mcqs?
The product of rms values of current and voltage is called as?
A. Real power
B. Apparent power
C. Reactive power
D. Polar curves
Right Answer: B. Apparent power
Tell us how can we improve this Mcqs?
Harmonics in 3 phase inverters can be reduced by using?
A. Passive filter
B. Active filter
C. Both passive and active filters
D. None of these
Right Answer: C. Both passive and active filters
Tell us how can we improve this Mcqs?
When a 100 V moving iron voltmeter is of accuracy class 1 – 0 is used in a circuit, it reads 50 V. Then the maximum possible percentage error in the reading is?
A. 1 %
B. 2 %
C. 2.5 %
D. 3 %
Right Answer: B. 2 %
Tell us how can we improve this Mcqs?
To get a minimum value of stress (gmax) what should be the ratio of core diameter to sheath diameter?
A. 1 / 2.718
B. 2.178
C. 1 / 3.78
D. 3.78
Right Answer: A. 1 / 2.718
Tell us how can we improve this Mcqs?
Determine the average demand of a plant if its load factor and maximum demand are 0.60 and 30 MW.
A. 20 MW
B. 18 MW
C. 50 MW
D. 13 MW
Right Answer: B. 18 MW
Tell us how can we improve this Mcqs?
What type of earthing is used by transmission lines?
A. Plate earthing
B. Rod earthing
C. Strip earthing
D. All of these
Right Answer: C. Strip earthing
Tell us how can we improve this Mcqs?
The overload release protects the motor against?
A. Over voltage
B. Over current
C. Over load
D. All of these
Right Answer: C. Over load
Tell us how can we improve this Mcqs?
The non coincidence between loading and unloading curves is known as?
A. Zero drift characteristics
B. Sensitivity drift characteristics
C. Hysteresis
D. Zero drift plus sensitivity drift characteristics
Right Answer: C. Hysteresis
Tell us how can we improve this Mcqs?
A step – down choppers can be used in?
A. Electric traction
B. Electric vehicles
C. Machine tools
D. All of these
Right Answer: D. All of these
Tell us how can we improve this Mcqs?
The frequency of the induced emf in an induction motor is?
A. Greater than the supply frequency
B. Lesser than the supply frequency
C. Same as the supply frequency
D. None of these
Right Answer: C. Same as the supply frequency
Tell us how can we improve this Mcqs?
How many outlets are permitted in a power circuit?
A. 10 points
B. 2 points
C. 5 points
D. 1 points
Right Answer: B. 2 points
Tell us how can we improve this Mcqs?
The wattles component is?
A. I
B. I cos∅
C. I sin∅
D. None of these
Right Answer: C. I sin∅
Tell us how can we improve this Mcqs?
Please Refresh the Page for more and new Electrical Engineering Mcqs. Every time when you refresh the page you have new Mcqs for preparation.
