# Basic Electrical Engineering MCQs Part 29

Basic Electrical Engineering MCQs Part 29

Contents

## The material that has nearly zero temperature coefficient of resistance

The material that has nearly zero temperature coefficient of resistance:

1. Carbon
2. Copper
3. Manganin
4. Porcelain

Correct answer: 3. Manganin

Explanation: Manganin has nearly zero temperature coefficient of resistance

## A field of force can exist only between

A field of force can exist only between

1. Two atoms
2. Two ions
3. Two molecules
4. Two metal particles

Correct answer: 2. Two ions

## Specific resistance of a substance is measured in

Specific resistance of a substance is measured in

1. Ω/m
2. Ω-m
3. Ω/m2
4. m/Ω

Correct answer: 2. Ω-m

## The resistance of a closed switch is

The resistance of a closed switch is:

1. Zero
2. Infinity
3. About 50 ohms
4. About 500 ohms

Correct answer: 1. Zero

Explanation: A closed switch has zero resistance.

## The wattage of test lamp for testing appliances should be

The wattage of test lamp for testing appliances should be:

1. Very low
2. Low
3. High
4. Any value

Correct answer: 3. High

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