Units and Measurement GK Objective Questions and Answers - 1
Question: 1
The dynamo is a device for converting
(A) Mechanical energy into electrical energy
(B) Chemical energy into electrical energy
(C) Heat energy into electrical energy
(D) Magnetic energy into electrical energy
Ans: A
Mechanical energy into electrical energy
Question: 2
Very small time intervals are accurately measured by the
(A) Atomic clocks
(B) White dwarfs
(C) Pulsars
(D) Quartz clocks
Ans: A
Atomic clocks
Question: 3
Which of the following instruments is used for precise measurement of refractive indices?
(A) Spherometer
(B) Spectrometer
(C) Micrometer
(D) Photometer
Ans: B
Spectrometer
Question: 4
Electric current is measured by
(A) Ammeter
(B) Anemometer
(C) Commutator
(D) Voltmeter
Ans: A
Ammeter
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