MCQs of Measurement of R, L and C (Electrical Measurement and Measuring Instruments - 3160915)

Showing 21 to 30 out of 51 Questions

21.

When is the bridge circuit balanced?

(a)	When voltage is applied
(b)	When current flows through the opposite ends of the bridge circuit
(c)	When no current flows through the galvanometer
(d)	When impedance is minimum

22.

Relationship at balance condition between the component values of the four arms of a bridge is known as _________

23.

D.C. bridges are used for _________

24.

What is the relation between the balance equation and the magnitude of input voltage?

(a)	directly proportional
(b)	independent
(c)	inversely proportional
(d)	depends on the null indicator

25.

What happens to the balance condition, if the source and detector are interchanged?

(a)	increases by a factor of 2
(b)	reduces to half
(c)	remains unchanged
(d)	independent of the type of source and detector

26.

The simplest type of bridge used for the measurement of medium resistances is known as _________

27.

Commonly used D.C. bridges are _________

(a)	Schering and Anderson
(b)	Maxwell inductance and capacitance
(c)	DeSauty and Wagner
(d)	Wheatstone and Kelvin

28.

What are the physical parameters that are to be controlled when a bridge is used in control applications?

29.

In control applications, one arm of the bridge circuit contains a _________

30.

A galvanometer is used as a _________

Showing 21 to 30 out of 51 Questions