Electrical Engineering MCQs: 3,658 practice questions with answer choices and available explanations. Page 231 of 244.

Electrical Engineering MCQs by topic

Basic Electrical MCQs121 Power Electronics217 Transformers132 Transmission and Distribution90 D.C. Motors130 D.C. Generators120 Polyphase Induction Motors99 Single Phase Induction Motors110 Synchronous Motors122 Network Theorems47 Economics of Power Generation98 A.C. Fundamentals, Circuits and Circuit Theory109 Cables57 Electrolysis and Storage of Batteries119 Electrostatics180 Magnetic Circuit28 Rectifiers and Converters58 Magnetism and Electromagnetism85 Electromagnetic Induction85 Switchgear and Protection102 OP-AMP Circuits24 Heating and Welding50 Earthing or Grounding11 Parallel Circuits25 Oscillators28 Amplifiers with Negative Feedback18 Transistors42 Semiconductor Diode44 Analog Electronics46 Hybrid Parameters12 Modulation and Demodulation40 Control Systems100 Digital Electronics36 Electric Traction74 Electrical Engineering Materials100 Electrical Machine Design103 Electronic Instruments30 Field Effect Transistors - FET47 Industrial Drives70 Integrated Circuits15 Measurement and Instrumentation109 Multi-Stage Transistor Amplifiers40 Power Generation121 Regulated D.C. Power Supply39 SCR (Silicon Controlled Rectifiers)25 Semiconductor Theory35 Single Stage Transistor Amplifiers38 Solid-State Switching Circuits29 Transistor Audio Power Amplifiers39 Transistor Biasing40 Transistor Tuned Amplifiers40 Series-Parallel Circuits29 Passive Filters20 Operational Amplifier30

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Electrical Engineering MCQs

Showing page 231 of 244 · 3,658 total solved questions available.

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Two generators are running in parallel. One of the generators may run as motor for which of the following reasons?

A.The speed of that generator is increased

B.The field of that generator is weakened

C.That generator takes large share of loads

D.The direction of that generator is reversed

Explanation: The correct answer is That generator takes large share of loads.

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Pin type insulators are generally not used for voltages beyond________?

A.1 kV

B.11 kV

C.33 kV

D.22 kV

Explanation: The correct answer is 33 kV.

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A common-mode signal is applied to ________?

A.the noninverting input

B.top of the tail resistor

C.both iputs

D.the inverting input

Explanation: The correct answer is both iputs.

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The main disadvantage of a mechanical switch is that it________?

A.Is operated mechanically

B.Has high inertia

C.None of the above

D.Is costly

Explanation: The correct answer is Has high inertia.

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Two infinite parallel plates 10 mm apart have maintained between them a potential difference of 100 V. The acceleration of an electron placed between them is________?

A.1.6 x 1015 m/s2

B.1.76 x 1015 m/s2

C.0.56 x 1015 m/s2

D.1.5 x 1015 m/s2

Explanation: The correct answer is 1.76 x 1015 m/s2.

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A JFET has high input impedance because ________?

A.it is made of semiconductor material

B.of impurity atoms

C.none of the above

D.input is reverse biased

Explanation: The correct answer is input is reverse biased.

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In a certain three-branch parallel circuit, R1 has 12 mA through it, R2 has 15 mA through it, and R3 has 25 mA through it. After measuring a total of 27 mA, you can say that________?

A.the circuit is operating properly

B.R3 is open

C.R2 is open

D.R1 is open

Explanation: The correct answer is R3 is open.

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MOSFET stands for________?

A.Metal – oxide semiconductor field effect transmitter

B.Metal – oxide silicon field effect transistor

C.Molybdenum – oxide semiconductor field effect transistor

D.Metal – oxide semiconductor field effect transistor

Explanation: The correct answer is Metal – oxide semiconductor field effect transistor.

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For 275 kV transformers, using cold rolled grain oriented steel, which of the following values of flux density may be used?

A.1.3 Wb/m2

B.None of the above

C.1.1 Wb/m2

D.1.0 Wb/m2

E.1.6 Wb/m2

Explanation: The correct answer is 1.6 Wb/m2.

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The load cycle for a motor driving a power press will be________?

A.continuous but periodical

B.variable load

C.continuous

D.intermittent and variable load

Explanation: The correct answer is intermittent and variable load.

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The minimum charge on an ion is________?

A.equal to the charge of an electron

B.equal to the atomic number of the atom

C.equal to the charge of the number of electrons in an atom (#) zero

Explanation: The correct answer is equal to the charge of an electron.

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Point out the wrong statement. Magnetic leakage is undesirable in electric machines because it________?

A.produces fringing

B.increases their cost of manufacture

C.leads to their increased weight

D.lowers their power efficiency

Explanation: The correct answer is lowers their power efficiency.

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A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will________

A.remain same

B.increase

C.heater will burn out

D.decrease

Explanation: The correct answer is increase.

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Negative voltage regulation is indicative that the load is________?

A.capacitive only

B.inductive or resistive

C.inductive only

D.none of the above

Explanation: The correct answer is capacitive only.

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The insulation between windings and grounded core and the insulation between the windings of the same phase is called________?

A.minor insulation

B.either of the above

C.none of the above

D.major insulation

Explanation: The correct answer is major insulation.

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