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Electrical Science Principles Cat 3

Authored by John Gichuru

Engineering

University

Electrical Science Principles Cat 3
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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ohm's Law relates voltage (V), current (I), and resistance (R). Which is correct?

V = I × R

V = R ÷ I

R = Power × V

I = Power × R

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An ideal voltage source is characterized by:

Zero voltage

Zero internal resistance

Infinite internal resistance

Variable voltage

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a transformer, mutual induction enables operation. What principle does this describe?

Static induction

Mutual induction

Electrostatic induction

Self induction

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Power factor (PF) in AC systems is defined as:

True power ÷ Apparent power

Apparent power ÷ True power

Real power × Reactive power

Resistance ÷ Reactance

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to Kirchhoff's Voltage Law (KVL), the sum of voltages around a closed loop equals:

Conservation of energy

Conservation of charge

Zero

Both A and C

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which component is considered passive?

Transistor

Diode

Resistor

MOSFET

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In gases and liquids, current consists of the flow of:

Only electrons

Positive and negative ions

Only positive ions

None

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