A.zero
B.0.3
C.unity
D.0.5
Explanation: The correct answer is 0.5.
Submitted by: Academy of Pakistan
Electrical Engineering MCQs: 3,658 practice questions with answer choices and available explanations. Page 39 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 39 of 244 · 3,658 total solved questions available.
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A.A phase shift around the feedback loop of 0o
B.A phase shift around the feedback loop of 180o
C.A gain around the feedback loop of one-third
D.A gain around the feedback loop of less than 1
Explanation: The correct answer is A phase shift around the feedback loop of 0o.
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A.IGBTs
B.All of above
C.B.JTs
D.MOSFETs
Explanation: The correct answer is All of above.
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A.none of the above
B.it limits the speed of the motor
C.it limits the starting current to a safe value
D.it starts the motor
Explanation: The correct answer is it limits the starting current to a safe value.
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A.none of the above
B.less than 1
C.1
D.more than 1
Explanation: The correct answer is less than 1.
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A.steam passes through tubes and cooling water surrounds them
B.cooling water passes through tubes and steam surrounds them
C.steam and cooling water mix
D.steam and cooling water do not mix
Explanation: The correct answer is steam and cooling water mix.
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A.24 N
B.2.4 N
C.0.24 N
D.240 N
Explanation: The correct answer is 2.4 N.
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A.More than
B.None of the above
C.The same as
D.Less than
Explanation: The correct answer is More than.
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Of the values listed, the most realistic value for open-loop voltage gain of an OP-amp is________?
0A.1
B.80 dB
C.2000
D.100,000
Explanation: The correct answer is 100,000.
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A.reduce sparking at the brushes
B.none of the above
C.increase the torque
D.reduce the effects of armature reaction
Explanation: The correct answer is reduce sparking at the brushes.
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A.frequency
B.intensity
C.speed
D.wave length
Explanation: The correct answer is frequency.
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A.Diesel power plant
B.Nuclear power plant
C.Thermal power plant
D.Hydro-electric power plant
Explanation: The correct answer is Diesel power plant.
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A.330 kV
B.lkV
C.100 kV
D.33 kV
Explanation: The correct answer is 33 kV.
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Due to non sinusoidal waveform of the input current, the power factor of the rectifier is________?
0A.Negatively affected by firing angle
B.Negatively affected by distortion of the input current
C.Both (a) and (b)
D.Positively affected by both firing angle and distortion of the input current
Explanation: The correct answer is Both (a) and (b).
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A.Synchronous motor
B.D.C. shunt motor
C.Reluctance motor
D.D.C. series motor
E.Single phase induction motor (split phase start or induction run motor)
Explanation: The correct answer is Single phase induction motor (split phase start or induction run motor).
Submitted by: Academy of Pakistan