Study mode · no timer

Measurement and Instrumentation

Study 109 Electrical Engineering MCQs with correct answers and explanations.

Answers and explanations are always visible Take this test

91Electrical EngineeringMedium

Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured?

ARecording instruments

BIntegrating instruments

CAbsolute instruments

DIndicating instruments

Correct answer

D. Indicating instruments

Explanation

The correct answer is Indicating instruments.

92Electrical EngineeringMedium

The household energy meter is________?

Aan indicating instrument

Ban integrating instrument

Ca recording instrument

Dnone of the above

Correct answer

B. an integrating instrument

Explanation

The correct answer is an integrating instrument.

93Electrical EngineeringMedium

In a Schering bridge the potential of the detector above earth potential is________?

A5 kV

B1 kV

C10 kV

Da few volts only

Correct answer

D. a few volts only

Explanation

The correct answer is a few volts only.

94Electrical EngineeringMedium

Most common form of A.C. meters met with in every day domestic and industrial installations are________?

Ainduction type single phase energy meters

Ball of the above

Ccommutator motor meters

Dmercury motor meters

Correct answer

A. induction type single phase energy meters

Explanation

The correct answer is induction type single phase energy meters.

95Electrical EngineeringMedium

________ instruments are those which measure the total quantity of electricity delivered in a particular time?

AIndicating

BRecording

CIntegrating

DAbsolute

Correct answer

C. Integrating

Explanation

The correct answer is Integrating.

96Electrical EngineeringMedium

The two pressure coils of a single phase power factor meter have________?

Athe same dimension but different number of turns

Bthe same number of turns but different dimensions

Cthe same dimensions and the same number of turns

Dnone of the above

Correct answer

C. the same dimensions and the same number of turns

Explanation

The correct answer is the same dimensions and the same number of turns.

97Electrical EngineeringMedium

A phase shifting transformer is used in conjunction with________?

AA.C. co-ordinate potentiometer

BCrompton potentiometer

CD.C. potentiometer

DDrysdale potentiometer

Correct answer

D. Drysdale potentiometer

Explanation

The correct answer is Drysdale potentiometer.

98Electrical EngineeringMedium

In a low power factor wattmeter the pressure coil is connected________?

Ain any of the two meters at connection

Bto the supply side of the current coil

Cnone of the above

Dto the load side of the current coil

Correct answer

D. to the load side of the current coil

Explanation

The correct answer is to the load side of the current coil.

99Electrical EngineeringMedium

The pointer of an indicating instrument should be________?

Aeither A. or B.

Bvery heavy

Cneither A. nor B.

Dvery light

Correct answer

D. very light

Explanation

The correct answer is very light.

100Electrical EngineeringMedium

It is required to measure the true open circuit e.m.f. of a battery. The best device is________?

AD.C. potentiometer

BAmmeter and a known resistance

CNone of the above

DD.C. voltmeter

Correct answer

A. D.C. potentiometer

Explanation

The correct answer is D.C. potentiometer.

The two pressure coils of a single phase power factor meter have________?

Athe same dimension but different number of turns

Bthe same number of turns but different dimensions

Cthe same dimensions and the same number of turns

Dnone of the above

Correct answer

C. the same dimensions and the same number of turns

Explanation

The correct answer is the same dimensions and the same number of turns.