Electrical Measurement and Measuring Instruments (3160915) MCQs

MCQs of Concepts of measurement

Showing 11 to 20 out of 27 Questions
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11.

Which of the following are integrating instruments?

(a)

Ammeters.
(b)

Wattmeters.
(c)

Voltmeters.
(d)

Ampere hour and watt hour meters.
Answer:

Option (d)

12.

The errors mainly caused by human mistakes are

(a)

gross error.
(b)

instrumental error.
(c)

observational error.
(d)

systematic error.
Answer:

Option (a)

13.

Resolution of an instrument is

(a)

the maximum non linearity.
(b)

the maximum quantity it can measure.
(c)

the minimum quantity it can measure.
(d)

ability to distinguish polarity.
Answer:

Option (c)

14.

The measured value of a resistance is 10.25 ohm, whereas its value of 10.22 ohm. What is absolute error of the measurement?

(a)

0.01 ohm.
(b)

 0.03 ohm.
(c)

15.36 ohm.
(d)

10.26 ohm.
Answer:

Option (b)

15.

In measurement system, the function of the signal manipulating elements is to

(a)

to perform linear operation like addition and multiplication.
(b)

to perform non liner operation like clipping filtering, chopping and clamping.
(c)

change the magnitude of the input signal while retaining its identity.
(d)

change the quantity under measurement to an analogues signal.
Answer:

Option (c)

16.

A pressure measurement instrument is calibrated between 10 bar and 260 bar. The scale span of the instrument is

(a)

10 bar.
(b)

250 bar.
(c)

260 bar.
(d)

270 bar.
Answer:

Option (b)

17.

Purely mechanical instrument cannot be used for dynamic measurements because they have

(a)

high inertia.
(b)

higher response time.
(c)

large time constant.
(d)

 all of the above.
Answer:

Option (d)

18.

An analog ammeter is

(a)

a recording instrument.
(b)

a controlling instrument.
(c)

an absolute instrument.
(d)

an indicating instrument.
Answer:

Option (d)

19.

A wattmeter reads 30.34 W. The absolute error in the measurement is - 2.22 W. What is the true value of power?

(a)

32.56 W .
(b)

28.12 W.
(c)

25.45 W.
(d)

None of the above.
Answer:

Option (a)

20.

Which of the following is the advantage of Passive instruments?

(a)

Accurate
(b)

Cheap
(c)

Sensitive
(d)

Power Supply Not Needed
Answer:

Option (d)

Showing 11 to 20 out of 27 Questions
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