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Electrical Engineering MCQs: 3,658 practice questions with answer choices and available explanations. Page 75 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

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In a boiler installation the natural draught is produced________?

0
A.due to the fact that furnace gases being light go through the chimney giving place to cold air from outside to rush in
B.due to the fact that at the chimney top the pressure is more than its environmental pressure
C.due to the fact that pressure at the grate due to cold column is higher than the pressure at the chimney base due to hot column
D.all of the above
Explanation: The correct answer is due to the fact that pressure at the grate due to cold column is higher than the pressure at the chimney base due to hot column.

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Positive logic in a logic circuit is one in which________?

0
A.logic 0 and 1 are represented by 0 and positive voltage respectively
B.logic 0 voltage level is higher than logic 1 voltage level
C.logic 0 and, -1 are represented by negative and positive voltages respectively
D.logic 0 voltage level is lower than logic 1 voltage level
Explanation: The correct answer is logic 0 voltage level is lower than logic 1 voltage level.

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In a power or distribution transformer about 10 per cent end turns are heavily insulated________?

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A.to reflect the line surge and save the winding of a transformer from damage
B.to absorb the line surge voltage and save the winding of transformer from damage
C.none of the above
D.to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns
Explanation: The correct answer is to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns.

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