Electrical Measurement and Measuring Instruments (3160915) MCQs

MCQs of Measurement of R, L and C

Showing 41 to 50 out of 51 Questions
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41.

High resistances are of the order of __________

(a)

0.1 Mῼ
(b)

10 mῼ
(c)

1 kῼ
(d)

10 ῼ
Answer:

Option (a)

42.

Megger is a ________

(a)

source of e.m.f
(b)

source to measure high resistance
(c)

type of a null detector
(d)

current carrier
Answer:

Option (b)

43.

Megger is also used for ________

(a)

providing additional e.m.f
(b)

bridge balance
(c)

testing insulation resistance
(d)

controlling the temperature
Answer:

Option (c)

44.

The role of the permanent magnet in a megger is to ________

(a)

provide field
(b)

provide voltage
(c)

generate power
(d)

balance the circuit
Answer:

Option (a)

45.

A guard ring is provided in a megger to ________

(a)

protect the circuit
(b)

eliminate error
(c)

reduce current flow
(d)

limit the temperature rise
Answer:

Option (b)

46.

Why is the scale of a megger calibrated in megaohms?

(a)

to indicate resistance
(b)

to minimise the current flow
(c)

to increase the voltage drop
(d)

to reduce the temperature
Answer:

Option (a)

47.

Megger can be used for verifying the electrical insulation level of ____________

(a)

passive components such as resistance, capacitor and inductance
(b)

devices such as motor, cable, etc
(c)

solid state devices
(d)

liquid crystal devices
Answer:

Option (b)

48.

Megger is also known as _________

(a)

megohmmeter
(b)

multimeter
(c)

galvanometer
(d)

ammeter
Answer:

Option (a)

49.

The application of a megger is _________

(a)

to measure resistance
(b)

 to test for leakage
(c)

to limit the current
(d)

to increase the emf of the circuit
Answer:

Option (b)

50.

In the simplest form, an AC bridge consists of ____________

(a)

arms, source and a detector
(b)

arms and source
(c)

source and detector
(d)

arms and detector
Answer:

Option (a)

Showing 41 to 50 out of 51 Questions
2 3 4 5 6