Measurements and Instrumentation - Part 1 Online Exam Quiz
Measurements and Instrumentation - Part 1 GK Quiz. Question and Answers related to Measurements and Instrumentation - Part 1. MCQ (Multiple Choice Questions with answers about Measurements and Instrumentation - Part 1
To increase Q factor of a coil, the wire should be
Options
A : long
B : thin
C : thick
D : long and thin
An ammeter of 0-25 A range has a guaranteed accuracy of 1% of full scale reading. The current measured is 5 A. The limiting error is
Options
A : 2%
B : 2.5%
C : 4%
D : 5%
The coil of a moving iron instrument has a resistance of 500 ? and an inductance of 1 H. It reads 250 V when a 250 V dc is applied. If series resistance is 2000 ?, its reading when fed by 250 V, 50 Hz ac will be
Options
A : 260 V
B : 252 V
C : 250 V
D : 248 V
In 3 phase power measurement by two wattmeter method, the reading of one wattmeter is zero. The power factor of load is
Options
A : 1
B : 0.5
C : 0
D : 0.8
In a CRO which of the following is not a part of electron gun
Options
A : cathode
B : grid
C : accelerating anode
D : X - Y plates
If reference sound pressure P 0 is 2 x 10 -5 N/m 2 , a sound pressure of 90 dB is equal to
Options
A : 0.632 N/m 2
B : 0.707 N/m 2
C : 0.835 N/m 2
D : 0.925 N/m 2
Which of the following voltmeters would you use for measuring voltage across 20 k? resistance?
Options
A : Voltmeter having a resistance of 5 k?
B : Voltmeter having a sensitivity of 1 kW/V
C : Voltmeter having sensitivity of 10 kW/V
D : None of the above
A single phase energy meter has the rating 1200 resolutions/ kWh. If a 500 W electric gadget is used for 4 hours, the energy meter will make
Options
A : 1200 revolutions
B : 1800 revolutions
C : 2100 revolutions
D : 2400 revolutions
In which of the transformer is the secondary nearly short circuited under normal operating conditions?
Options
A : CT
B : PT
C : Distribution transformer
D : Power transformer
A moving coil instrument has a resistance of 0.6 ? and full scale deflection at 0.1 A. To convert it into an ammeter of 0-15 A range, the resistance of shunt should be
Options
A : 0.6 ?
B : 0.06 ?
C : 0.1 ?
D : 0.004 ?
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