Electrical Engineering Mcqs

Practice MCQs under Electrical Engineering Mcqs. 110 available

1A.C. Fundamentals, Circuits and Circuit Theory
2Amplifiers with Negative Feedback
3Analog Electronics
4Basic Electrical Mcqs
5Cables
6Control Systems
7D.C. Generators
8D.C. Motors
9Digital Electronics
10Earthing or Grounding
11Economics of Power Generation
12Electric Traction
13Electrical Engineering Materials
14Electrical Machine Design
15Electrolysis and Storage of Batteries
16Electromagnetic Induction
17Electronic instruments
18Electrostatics
19Field Effect Transistors - FET
20Heating and Welding
21Hybrid Parameters
22Industrial Drives
23Magnetic Circuit
24Magnetism and Electromagnetism
25Measurement and Instrumentation
26Modulation and Demodulation
27Multi-Stage Transistor Amplifiers
28Network Theorems
29OP-AMP Circuits
30Operational Amplifier
31Oscillators
32Parallel Circuits
33Passive Filters
34Polyphase Induction Motors
35Power Electronics
36Power Generation
37Rectifiers and Converters
38Regulated D.C. Power Supply
39SCR (Silicon Controlled Rectifiers)
40Semiconductor Diode
41Semiconductor Theory
42Series-parallel Circuits
43Single Phase Induction Motors
44Single Stage Transistor Amplifiers
45Solid-State Switching Circuits
46Switchgear and Protection
47Synchronous Motors
48TRANSISTORS
49Transformers
50Transistor Audio Power Amplifiers
51Transistor Biasing
52Transistor Tuned Amplifiers
53Transmission and Distribution
54integrated Circuits

Questions

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Correct options are highlighted when revealed.

1.In a series L-C circuit operating at its resonant frequency, what is the behavior of the current?

The current reaches its highest valueThe current drops to its lowest pointThe circuit's impedance peaksThe voltage across the capacitor is at its minimumNone of the above

2.In an alternating current (AC) circuit, which of the following statements is always true?

The apparent power exceeds the real powerThe reactive power surpasses the apparent powerThe real power is greater than the reactive powerThe reactive power is higher than the real powerNone of the above

3.How does the time constant of a capacitive circuit change with variations in capacitance and resistance?

It grows when both capacitance and resistance decreaseIt becomes larger as capacitance decreases and resistance increasesIt rises when capacitance increases but resistance decreasesIt increases when both capacitance and resistance increaseIt remains zero regardless of changes

4.How does the inductance of a coil change when the supply frequency increases?

Remains constant regardless of frequencyReduces as the frequency risesRises as the frequency increasesDrops to zero at higher frequenciesNo effect

5.What is true about the power in an ideal inductive circuit?

The real power consumed is zeroThe reactive power equals zeroThe apparent power is zeroNone of the above powers are zeroNo power is present

6.How does the time constant of an inductive circuit change with variations in inductance and resistance?

It grows when inductance rises and resistance fallsIt grows when both inductance and resistance increaseIt grows when both inductance and resistance decreaseIt grows when inductance decreases and resistance increasesIt remains zero

7.In an R-L-C circuit operating at resonance, the magnitude of the current primarily depends on which parameter?

The resistance value (R)The inductance value (L)The capacitance value (C)The combined values of resistance, inductance, and capacitanceThe current is zero at resonance

8.In a series R-L-C circuit, which component(s) can be adjusted to alter the resonance frequency?

Only the resistance (R)Only the inductance (L)Only the capacitance (C)Either the inductance (L) or the capacitance (C)None of the components

9.What is the formula for the time constant in a series resistor-capacitor (R-C) circuit?

R divided by CR multiplied by the square of CProduct of resistance and capacitanceSquare of resistance times capacitanceNo time constant exists

10.When does a purely inductive circuit absorb power from an alternating current source?

The voltage applied drops while the current risesThe voltage applied rises while the current fallsBoth the applied voltage and current increase simultaneouslyBoth the applied voltage and current decrease simultaneouslyNone of the above

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