electrical

Electrical Instruments MCQ Objective Questions and Answers Page - 1

1.

In a generalised measurement system the function of the signal manipulating element is to

Answer/ Hint      

Answer : C

Explanation :

2.

A recorder

Answer/ Hint      

Answer : D

Explanation :

3.

Strip-chart recorders have the advantage(s) of

Answer/ Hint      

Answer : D

Explanation :

4.

The zero-suppression in recorders implies

Answer/ Hint      

Answer : B

Explanation :

5.

Galvanometer type recorders use

Answer/ Hint      

Answer : C

Explanation :

6.

Galvanometer used in recorders is

Answer/ Hint      

Answer : D

Explanation :

7.

The potentiometric recorders have the advantage(s) of

Answer/ Hint      

Answer : D

Explanation :

8.

The main drawback of balancing recorders is that

Answer/ Hint      

Answer : A

Explanation :

9.

The advantage of  x – y recorders are that

Answer/ Hint      

Answer : D

Explanation :

10.

The recording head in a magnetic tape responds to

Answer/ Hint      

Answer : A

Explanation :

11.

The main drawback of direct recording is

Answer/ Hint      

Answer : B

Explanation :

12.

The advantage of  FM  magnetic tape recording are

Answer/ Hint      

Answer : D

Explanation :

13.

The digital tape recording has the advantage(s) of

Answer/ Hint      

Answer : D

Explanation :

14.

Continuous recording of a signal is not possible in a

Answer/ Hint      

Answer : D

Explanation :

15.

Which one of the following statements is not correct  ?

Answer/ Hint      

Answer : C

Explanation :

16.

Which one of the following instruments is most suitable to study the behaviour of a damped transient around  10 kHz  ?

Answer/ Hint      

Answer : B

Explanation :

17.

The instrument servomechanism is actually an instrument system made of components,  which are

Answer/ Hint      

Answer : C

Explanation :

18.

A common element in most of the instrumentation systems for reasons of its compactness and linearity in its characteristics is

Answer/ Hint      

Answer : B

Explanation :

19.

The limitation of bellow element application to measurement is due to their lack of

Answer/ Hint      

Answer : B

Explanation :

20.

Pitot tubes are used for

Answer/ Hint      

Answer : C

Explanation :

21.

If the number of bellows elements is made double and the thickness of the bellows element is made half, the displacement of the element for the same applied pressure would be the

Answer/ Hint      

Answer : A

Explanation :

22.

A rotameter works on the principle of variable  :

Answer/ Hint      

Answer : C

Explanation :

23.

A diaphragm has a natural frequency of  30 kHz. If both its diameter and thickness are halved, the natural frequency is

Answer/ Hint      

Answer : C

Explanation :

24.

The instrumentation amplifiers are used principally to amplify signals from which of the following  ?

Answer/ Hint      

Answer : A

Explanation :

25.

Which one of the following in simple elemental forms is not a pressure sensor  ?

Answer/ Hint      

Answer : A

Explanation :

26.

An inverse transducer converts

Answer/ Hint      

Answer : A

Explanation :

27.

Transducers that are based on the variation of parameters due to application of any external stimulus are known as

Answer/ Hint      

Answer : B

Explanation :

28.

Self-generating type transducers are  ____________  transducers.

Answer/ Hint      

Answer : A

Explanation :

29.

Which one of the following is  not  a self-generating type transducers  ?

Answer/ Hint      

Answer : D

Explanation :

30.

Which one of the following is a passive transducer  ?

Answer/ Hint      

Answer : D

Explanation :

31.

Which one of the following transducers is an active transducer  ?

Answer/ Hint      

Answer : A

Explanation :

32.

Which of the following transducers is classified as an active transducer  ?

Answer/ Hint      

Answer : D

Explanation :

33.

Pair of active transducers is

Answer/ Hint      

Answer : C

Explanation :

34.

Which of the following can act as an inverse transducer  ?

Answer/ Hint      

Answer : C

Explanation :

35.

The lower limit of useful working range of a transducer is determined by

Answer/ Hint      

Answer : B

Explanation :

36.

An ac signal conditioning is normally used for

Answer/ Hint      

Answer : B

Explanation :

37.

While selecting a transducer for a particular application, only

Answer/ Hint      

Answer : D

Explanation :

38.

In a resistance potentiometer, the nonlinearity

Answer/ Hint      

Answer : B

Explanation :

39.

In hygrometers the principle of measurement is

Answer/ Hint      

Answer : A

Explanation :

Electrical Instruments MCQ Objective Questions and Answers Page - 1
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