Electrical And Electronic Measurement MCQs

Question 1

The device used to measure flow of air around an aeroplane is

Accepted Answer

anemometer

Answer

venturimeter

Answer

orifice

Answer

rotameter

Question 2

In a pitot tube

Accepted Answer

velocity head is converted into pressure head

Answer

pressure head is converted into velocity head

Answer

velocity head is converted into datum head

Answer

differential pressure is produced across the tube

Question 3

Hot wire anemometer is used to measure

Accepted Answer

gas velocities

Answer

pressure of gauges

Answer

liquid discharge

Answer

very low pressures

Question 4

The function of the reference electrode in a pH meter is

Accepted Answer

to produce a constant voltage

Answer

to measure average pH value

Answer

to provide temperature compensation

Answer

to produce a constant current

Question 5

Main advantage of semiconductor strain gauge over resistive strain gauge is its

Accepted Answer

high sensitivity

Answer

low sensitivity

Answer

smaller size

Answer

better ruggedness

Question 6

The first stage of vertical amplifier of a CRO is a

Accepted Answer

CS (FET) stage

Answer

CE stage

Answer

CB stage

Answer

CC stage

Question 7

To minimize the loading of the circuit under test, the input impedance of a CRO must

Accepted Answer

be high

Answer

be low

Answer

be capacitive

Answer

match with the output impedance of the circuit

Question 8

Transistor Voltmeter (TVM) has

Accepted Answer

very low ohms/volt rating

Answer

very high ohms/volt rating

Answer

moderate ohms/volt rating

Answer

low ohms/volt rating

Question 9

Transistor voltmeter

Accepted Answer

can measure ac voltage

Answer

can not measure ac voltage

Answer

can not be designed to measure resistance as well as voltage

Answer

can not measure high frequency voltage