A.Hard carbon brushes
B.Natural graphite brushes
C.Metal graphite brushes
D.Electro-graphitic brushes
Explanation: The correct answer is Metal graphite brushes.
Submitted by: Academy of Pakistan
Electrical Engineering MCQs: 3,658 practice questions with answer choices and available explanations. Page 34 of 244.
Electrical Engineering MCQs by topic
Basic Electrical MCQs121Power Electronics217Transformers132Transmission and Distribution90D.C. Motors130D.C. Generators120Polyphase Induction Motors99Single Phase Induction Motors110Synchronous Motors122Network Theorems47Economics of Power Generation98A.C. Fundamentals, Circuits and Circuit Theory109Cables57Electrolysis and Storage of Batteries119Electrostatics180Magnetic Circuit28Rectifiers and Converters58Magnetism and Electromagnetism85Electromagnetic Induction85Switchgear and Protection102OP-AMP Circuits24Heating and Welding50Earthing or Grounding11Parallel Circuits25Oscillators28Amplifiers with Negative Feedback18Transistors42Semiconductor Diode44Analog Electronics46Hybrid Parameters12Modulation and Demodulation40Control Systems100Digital Electronics36Electric Traction74Electrical Engineering Materials100Electrical Machine Design103Electronic Instruments30Field Effect Transistors - FET47Industrial Drives70Integrated Circuits15Measurement and Instrumentation109Multi-Stage Transistor Amplifiers40Power Generation121Regulated D.C. Power Supply39SCR (Silicon Controlled Rectifiers)25Semiconductor Theory35Single Stage Transistor Amplifiers38Solid-State Switching Circuits29Transistor Audio Power Amplifiers39Transistor Biasing40Transistor Tuned Amplifiers40Series-Parallel Circuits29Passive Filters20Operational Amplifier30
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Electrical Engineering MCQs
Showing page 34 of 244 · 3,658 total solved questions available.
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A.series combination
B.both series and parallel combinations
C.none of above
D.parallel combination
Explanation: The correct answer is parallel combination.
Submitted by: Academy of Pakistan
A.RF and AF
B.IF and AF
C.IF and RF
D.RF and local oscillator signal
Explanation: The correct answer is RF and local oscillator signal.
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A.Dissipates a fair amount of switching power
B.All of these
C.Improves the reverse bias safe operating area
D.Divert the collector current during turn – off
Explanation: The correct answer is All of these.
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A.recovery
B.arc
C.none of the above
D.surge
E.operating
Explanation: The correct answer is recovery.
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A.20 kO
B.100 kO
C.10 kO
D.5 kO
Explanation: The correct answer is 10 kO.
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A.excitation winding gets disconnected
B.load in motor varies
C.supply voltage frequency changes
D.supply voltage fluctuates
Explanation: The correct answer is excitation winding gets disconnected.
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A.increasing the load
B.adjusting the governor
C.none of the above
D.reducing the terminal voltage
E.using reactors
Explanation: The correct answer is adjusting the governor.
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A.VCC/3
B.VCC
C.0
D.VCC/2
Explanation: The correct answer is VCC.
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A.50
B.0.05
C.500
D.20
Explanation: The correct answer is 20.
Submitted by: Academy of Pakistan
A.1000 : 1
B.1 : 1
C.100 : 1
D.40,000 : 1
Explanation: The correct answer is 40,000 : 1.
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A.Diesel shunters
B.Electric locomotives
C.Steam locomotives
D.Diesel locomotives
Explanation: The correct answer is Steam locomotives.
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A.Venturi metre
B.Barometer
C.Hygrometer
D.U-tube manometer
Explanation: The correct answer is U-tube manometer.
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A.friction and windage losses
B.hysteresis and eddy current losses
C.copper losses
D.none of the above
Explanation: The correct answer is hysteresis and eddy current losses.
Submitted by: Academy of Pakistan
A.lags behind the voltage by about 75°
B.leads the voltage by about 75°
C.leads the voltage by about 15°
D.lags behind the voltage by about 15°
Explanation: The correct answer is lags behind the voltage by about 75°.
Submitted by: Academy of Pakistan