Electrical Measurement and Measuring Instruments (3160915) MCQs

MCQs of Measurement of Parameters

Showing 11 to 20 out of 63 Questions
1 2 3 4 5 6
11.

132 KV AC voltage can be measured by

(a)

moving iron voltmeter
(b)

electro static voltmeter
(c)

moving coil voltmeter
(d)

hot wire voltmeter
Answer:

Option (b)

12.

Moving iron and PMMC instruments can be distinguished from each other by looking at

(a)

Pointer
(b)

Terminal size
(c)

 Scale
(d)

 Scale range
Answer:

Option (c)

13.

Which of the following instruments have least torque/weight ratio

(a)

 Dynamometer type
(b)

 PMMC
(c)

Attraction type moving iron
(d)

Repulsion type moving iron
Answer:

Option (a)

14.

The instrument having its deflection depends upon average value is

(a)

 Moving iron
(b)

Hot wire
(c)

 Rectifier type
(d)

 Induction type
Answer:

Option (c)

15.

A shunt is a __________

(a)

very high resistance
(b)

medium resistance
(c)

very low resistance
(d)

high resistance
Answer:

Option (c)

16.

In case of AC ammeters, shunts consist of __________

(a)

impedance
(b)

capacitance
(c)

resistance
(d)

inductance
Answer:

Option (c)

17.

What is the effect of the ammeter range on the shunt resistance?

(a)

no effect
(b)

varies by a factor of multiplying factor
(c)

varies by a factor of the resistance
(d)

varies by a factor of unity
Answer:

Option (b)

18.

What is the current transformer?

(a)

transformer used with an A.C. ammeter
(b)

 transformer used with an D.C. ammeter
(c)

transformer used with an A.C. voltmeter
(d)

transformer used with an D.C. voltmeter
Answer:

Option (a)

19.

C.T. and P.T. are used for _________

(a)

measuring low current and voltages
(b)

measuring very low current and voltages
(c)

measuring high currentsand voltages
(d)

measuring intermediate currents and voltages
Answer:

Option (c)

20.

The primary winding of a C.T. has _________

(a)

a larger number of turns
(b)

no turns at all
(c)

intermediate number of turns
(d)

a few turns
Answer:

Option (d)

Showing 11 to 20 out of 63 Questions
1 2 3 4 5 6