of an instrument reading of 8.3V with a 0 to 150V voltmeter having a
guaranteed accuracy of 1% full-scale reading is
 The induction of a high Q inductor can be measured by a
B) Hay Bridge
C) Maxwell Bridge
D) Wien Bridge
 If a DC voltmeter is made from an ammeter having a fed of 100μA then its sensitivity (in KΩ/V) will be
Guidelines: Assertion (A) and Reason (R) type Questions 4 and 5:
(B) Both a and R are correct and R is not explanation for A.
(C) A is true but R is false.
(D) A is false but R is true.
 A: The screen of a CRT is coated with phosphor on the inside.
R: Phosphor absorbs the KE of the bombarding electrons
and re-emits energy at a frequency in the visible region.
 A: The Weign Bridge can be used for frequency measurements.
B: The Weign Bridge uses only capacitors and resistors.
 It is desired to convert a 0-1000A
meter movement, with an internal resistance of 100 ohms, into a 0-100mA
meter. The required value of shunt resistance is about
 Match List I with List II:
|List I||List II|
|(a) Megger||(p) Measurement of loss angle in a dielectric|
|(b) Spectrum analyzer||(q) Measurement of frequency|
|(c) Schering bridge||(r) Measurement of insulation resistance|
|(d) Digital counter||(s) Measurement of harmonics|
 In moving coil meters, damping is provided by
B) the aluminium frame of the coil.
C) eddy current disk.
D) The coil spring attached to the moving mechanism.
 A 0 to 300V voltmeter has a guaranteed accuracy of 1% of full scale
reading. The voltage measured by the instrument is 83V. The percentage
limiting error is
 An Aryton shunt is used to make a D’Arsonval galvanometer into a