Basic Electrical Engineering MCQs Part 39

Electrical Engineering MCQs on Basic Concepts of EE – Basic Electrical Engineering MCQs

Which of following can have negative temperature coefficient

Which of following can have negative temperature coefficient

1. Compounds of silver
2. Electrolytes
3. Liquid metals
4. Metallic alloys

Correct answer: 2. Electrolytes

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

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

1. Be zero
2. Decrease
3. Increase
4. Remain same

Correct answer: 3. Increase

The correct statement defining the semiconductor materials is

The correct statement defining the semiconductor materials is

1. A semiconductor is a material made of alternate layers of conducting material and insulator
2. A semiconductor is a material which has conductivity having average value of conductivity of metal and insulator
3. A semiconductor is a material whose conductivity is same as between that of a conductor and an insulator
4. A semiconductor is one which conducts only half of the applied voltage

Correct answer: 3. A semiconductor is a material whose conductivity is same as between that of a conductor and an insulator

The property of a conductor because of which it passes current is known as

The property of a conductor because of which it passes current is known as

1. Conductance
2. Inductance
3. Reluctance
4. Resistance

Correct answer: 1. Conductance

In case of direct current

In case of direct current

1. Magnitude and direction of current changes with time
2. Magnitude and direction of current remains constant
3. Magnitude of current changes with time
4. Magnitude of current remains constant

Correct answer: 2. Magnitude and direction of current remains constant