Electrical And Electronic Measurement MCQs

Question 1

The level range of harmonic analyzer using crystal filter is from

Accepted Answer

?90 dB to 32 dB

Answer

20 dB to 40 dB

Answer

40 dB to 90 dB

Answer

90 dB to 180 dB

Question 2

Compared to an absorption wavemeter, a reaction wavemeter

Accepted Answer

absorbs less power from the signal

Answer

is more accurate

Answer

absorbs more power from the signal

Answer

has additional resonance frequency indication

Question 3

A wave guide acts as a

Accepted Answer

high pass filter

Answer

low pass filter

Answer

band pass filter

Answer

band stop filter

Question 4

The instrument used for frequency measurement in waveguides is

Accepted Answer

galiometer

Answer

balometer

Answer

cavity resonator

Answer

klystron

Question 5

Which of the following meters is suitable for radio frequency measurement?

Accepted Answer

heterodyne frequency meter

Answer

Electrical resonance frequency meter

Answer

Weston frequency meter

Answer

none of these

Question 6

A dynamometer type wattmeter responds to the

Accepted Answer

average value of active power

Answer

average value at reactive power

Answer

peak value at active power

Answer

peak value at reactive power

Question 7

A transfer instrument employed in the standardization of a polar type a.c potentiometer is

Accepted Answer

a thermal instrument

Answer

an electrostatic instrument

Answer

a dynamometer instrument

Answer

a moving coil instrument

Question 8

The primary current in a current transformer is dictated by

Accepted Answer

(e) none of the above

Answer

the secondary burden

Answer

the core of the transformer the load current

Question 9

A d.c voltmeter has a sensitivity of 1000 S2 / volt. When it measures half full scale in 100 V range, the current through the voltmeter will be

Accepted Answer

0.5 mA

Answer

100 mA

Answer

1 mA

Answer

50 mA