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D.C. Generators in Electrical Engineering MCQs: 120 practice questions with answer choices and available explanations. Page 1 of 8.

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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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D.C. Generators

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When two D.C. series generators are running in parallel, an equilizer bar is used________?

0
A.to increase the series flux
B.to reduce the combined effect of ar-mature reaction of both machines
C.so that two similar machines will pass approximately equal currents to the load
D.to increase the speed and hence generated e.m.f.
Explanation: The correct answer is so that two similar machines will pass approximately equal currents to the load.

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When two D.C. generators are running in parallel an equilizer bar is used________?

0
A.to increase the generated e.m.f.
B.so that the two identical machines will pass approximately equal cur¬rents to the load
C.to reduce the combined effect of ar-mature reaction of both the machines
D.to increase the series flux
Explanation: The correct answer is so that the two identical machines will pass approximately equal cur¬rents to the load.

Submitted by: Academy of Pakistan

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