Explore topic-wise MCQs in Electrical Engineering Questions.

This section includes 210 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering Questions knowledge and support exam preparation. Choose a topic below to get started.

51.

Which charging method is employed for charging a Lead acid battery?

A. Tapper charging
B. Constant voltage charging
C. Two rate method of charging
D. All of these
E. None of these
Answer» E. None of these
Discussion
52.

Which among these waves is called a standard lightning impulse wave?

A. 1.2 / 100 microsecond wave
B. 1.2 / 50 microsecond wave
C. 2.4 / 100 microsecond wave
D. 2.4 / 50 microsecond wave
Answer» C. 2.4 / 100 microsecond wave
Discussion
53.

Which among these uses a low voltage DC source?

A. Remote indication
B. Emergency lighting system
C. Remote position control
D. All of these
E. None of these
Answer» E. None of these
Discussion
54.

Which among these types of bus bars can be used outdoor?

A. Tubular
B. ACSR
C. AAC
D. All of these
E. None of these
Answer» E. None of these
Discussion
55.

Which among these tests is a DC test?

A. Polarisation index
B. Lightning impulse
C. Induced voltage tests
D. Switching voltage impulse
Answer» B. Lightning impulse
Discussion
56.

Which among these tests is not a routine test performed on the circuit breakers?

A. Mechanical operation tests
B. Dielectric tests
C. Calibration tests
D. Mechanical endurance tests
Answer» E.
Discussion
57.

Which among these tests is performed to check the dissipation factor?

A. Acceptance tests
B. Periodic maintenance tests
C. Both (a) and (b)
D. Power factor test
E. All the above
Answer» D. Power factor test
Discussion
58.

Which among these tests are pre start test on an electrical machine? i. Measurement of winding resistance ii. On load tests iii. Vibration tests iv. High voltage tests v. Tests on cooling system

A. i & iv only
B. i, ii & iv only
C. i, ii, iv & v only
D. i, ii, iii, iv, v only
Answer» D. i, ii, iii, iv, v only
Discussion
59.

Which among these tests are performed periodically?

A. Repair tests
B. Maintenance testing
C. Manufacturers tests
D. All of these
E. None of these
Answer» C. Manufacturers tests
Discussion
60.

Which among these tests are included in high voltage tests?

A. Power wet test
B. Impulse voltage withstand tests
C. Power frequency withstand test 1 minute dry
D. Only a and b
E. All of these
Answer» F.
Discussion
61.

Which among these synthetic rubber is a thermoplastic?

A. Ethylene propylene rubber
B. Polyvinyl chloride
C. Cross linked poly ethylene
D. All of these
Answer» C. Cross linked poly ethylene
Discussion
62.

Which among these systems is an auxiliary plant in a power system?

A. Fuel oil system
B. Raw water system
C. Transformer oil plant
D. All of these
E. None of these
Answer» E. None of these
Discussion
63.

Which among these require a low voltage DC source?

A. Telemetering and communication
B. Uninterrupted power supply
C. The protective relays and the trip circuit
D. All of these
E. None of these
Answer» E. None of these
Discussion
64.

Which among these materials is a permanent magnetic material?

A. Palladium
B. Chromium steel
C. Silicon steel
D. All of these
Answer» C. Silicon steel
Discussion
65.

Which among these is the most significant for the operation of synchronous generator?

A. Frequency
B. Load
C. Terminal voltage
D. Only (a) and (b)
E. All of these
Answer» F.
Discussion
66.

Which among these materials have a relative permeability of 1? i. Air ii. Copper iii. Iron iv. Nickel

A. i and ii only
B. i and iii only
C. i and iv only
D. iii and iv only
Answer» B. i and iii only
Discussion
67.

Which among these is the essential part for a CT?

A. Insulation over the core by tape
B. Support porcelain or epoxy insulator
C. Synthetic resin or oil insulation
D. All of these
E. None of these
Answer» E. None of these
Discussion
68.

Which among these is the application of universal motors?

A. Vacuum cleaners
B. Fans
C. Hair dryers
D. Washing machines
Answer» B. Fans
Discussion
69.

Which among these is the cause of sparking at brushes in DC motor?

A. Defective brushes
B. Defect in Commutator
C. Excessive load
D. Only a and b
E. All of these
Answer» F.
Discussion
70.

Which among these is the basic requirement of machine foundation?

A. Horizontal level
B. Rigidity
C. Freedom from vibrations
D. Only (b) & (c)
E. All of these
Answer» F.
Discussion
71.

Which among these is the application of synchronous motor? i. Ball mills ii. Metal rolling mills iii. Crushers

A. i only
B. ii and iii only
C. i and ii only
D. i, ii & iii
Answer» E.
Discussion
72.

Which among these is not a type test performed on the current transformers?

A. Overvoltage inter turn tests
B. Short time current tests
C. Temperature rise tests
D. Error measurement
Answer» B. Short time current tests
Discussion
73.

Which among these is not a type of single phase AC motor?

A. Split phase
B. Synchronous motor
C. Capacitor start
D. Capacitor run
Answer» C. Capacitor start
Discussion
74.

Which among these is / are the abnormal operating conditions caused due to mechanical overloads?

A. Sustained overloads
B. Prolonged starting or locked rotor
C. Stalling
D. Only (a) and (b)
E. All of these
Answer» F.
Discussion
75.

Which among these is common defect in a Commutator?

A. Over Mica
B. High Copper bar
C. Sharp edges of copper bars
D. Only a and b
E. All of these
Answer» F.
Discussion
76.

Which among these is not a starting method of induction motor?

A. Direct on line starting
B. Ward Leonard method of starting
C. Thyristor starting control
D. Autotransformer starting
Answer» C. Thyristor starting control
Discussion
77.

Which among these is an application of single phase synchronous AC motor?

A. Small drill
B. Large drill
C. Dishwasher
D. Sewing machine
Answer» D. Sewing machine
Discussion
78.

Which among these is a type test?

A. Bending test
B. Drainage test
C. Dielectric security test
D. All of these
E. None of these
Answer» E. None of these
Discussion
79.

Which among these is a type of surge arrestor?

A. Conventional gapped arrestors
B. Metal oxide arrestors
C. Both (A) and (B)
D. None of these
Answer» D. None of these
Discussion
80.

Which among these is a type of catridge?

A. D type
B. Bolted type
C. I type
D. Both (a) and (b)
E. All of these
Answer» E. All of these
Discussion
81.

Which among these is a procedure used for the alignment of shaft?

A. Axial positioning of the shaft
B. Paralleling of the shaft axis
C. Centring of shaft axis
D. Only (a) and (c)
E. All of these
Answer» F.
Discussion
82.

Which among these is a part of HVDC link?

A. Two earth electrodes
B. Converter valves
C. Bipolar DC line
D. All of these
E. None of these
Answer» E. None of these
Discussion
83.

Which among these is a method to minimise eddy current loss?

A. Laminated core
B. Insulation of lamination
C. Use of material of high electrical resistivity
D. Only a and c
E. All of these
Answer» F.
Discussion
84.

Which among these is a configuration of an isolator? i. Vertical break type ii. Horizontal type iii. Horizontal break with two post insulator iv. Horizontal break centre post rotating double break v. Pantograph type

A. Only ii and iii
B. i, ii, iii, and iv
C. i, ii, iii, iv, v
D. i, ii, iv, v
Answer» D. i, ii, iv, v
Discussion
85.

Which among these is a commissioning check during site testing for an induction motor?

A. Insulation resistance
B. Terminal shrouds
C. Heater supply
D. All of these
Answer» B. Terminal shrouds
Discussion
86.

Which among these gases is not used as a coolant?

A. Hydrogen
B. Nitrogen
C. Carbon dioxide
D. Helium
Answer» E.
Discussion
87.

Which among these HVDC projects are commissioned in India?

A. Rihand – Delhi HVDC
B. Vindhyachal Back to Back only
C. Chandrapur only
D. All of these
E. None of these
Answer» E. None of these
Discussion
88.

Which among these devices are used to protect low voltage induction motor?

A. Thermal overload relay
B. HRC fuse
C. Contactor starter
D. All of these
E. None of these
Answer» E. None of these
Discussion
89.

Which among these devices are required for manual control of induction motors?

A. Drum controller
B. Face plate starter
C. Toggle switch
D. Only b and c
E. All of these
Answer» F.
Discussion
90.

Which among these DC motor(s) is / are having lower full load torque?

A. Series motor
B. Shunt motor
C. Cumulative motor
D. Differential motor
Answer» C. Cumulative motor
Discussion
91.

Which among these are the types of single phase AC motors? i. Induction ii. Shaded pole iii. Synchronous iv. Universal

A. i & ii only
B. ii, iii & iv only
C. i, ii, iii & iv
D. ii & iii only
Answer» D. ii & iii only
Discussion
92.

Which among these are the properties of good grease? i. Corrosion protection ii. Viscosity iii. Consistencies iv. Mechanical stability

A. i & ii only
B. i & iii only
C. iii & iv only
D. i, ii, iii & iv
Answer» E.
Discussion
93.

Which among the following type of ‘release’ is provided for low voltage circuit breaker?

A. Overload Release
B. Thermal overload release
C. Shunt Release
D. All of these
E. None of these
Answer» E. None of these
Discussion
94.

Which among the following safety devices are provided on the power transformers?

A. Marshalling kiosk
B. Vacuum gauge
C. Pressure relief gauge
D. All of these
E. None of these
Answer» E. None of these
Discussion
95.

Which among the following is present in SCADA?

A. Data collection equipment
B. Data transmission telemetric equipment
C. Data monitoring equipment
D. All of these
E. None of these
Answer» E. None of these
Discussion
96.

Which among the following factors affect the cost of motor? i. Reliability and Availability ii. Installation & Commissioning charges iii. Running cost, KVAr iv. Depression formula used

A. i & ii
B. ii, iii, iv
C. i, ii, iv
D. i, ii, iii & iv
Answer» E.
Discussion
97.

Which among the following device is connected to provide protection against phase to earth insulation failure?

A. Earth fault relay connected in neutral to earth circuit.
B. Earth fault relay connected in three phase residual secondary circuit of C T secondaries
C. Differential protection
D. All of these
E. None of these
Answer» E. None of these
Discussion
98.

Which among the following cooling system is employed for large machine?

A. Radial flow
B. Axial flow
C. Combined radial and axial cooling
D. Multiple inlet cooling
Answer» D. Multiple inlet cooling
Discussion
99.

Which among the following components is / are present in the auxiliary AC system?

A. High voltage and low voltage switchgear
B. Power cables
C. Load control centres
D. All of these
E. None of these
Answer» E. None of these
Discussion
100.

Which among the following applications uses ward Leonard method of speed control?

A. Rolling mills
B. Colliery winding motor
C. Lifts and elevators
D. Only a and c
E. All of these
Answer» F.
Discussion