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

Question: 2

Very small time intervals are accurately measured by the

(A) Atomic clocks

(B) White dwarfs

(C) Pulsars

(D) Quartz clocks

Question: 3

Which of the following instruments is used for precise measurement of refractive indices?

(A) Spherometer

(B) Spectrometer

(C) Micrometer

(D) Photometer

Question: 4

Electric current is measured by

(A) Ammeter

(B) Anemometer

(C) Commutator

(D) Voltmeter