10,000+ Latest Current Affairs Gk Questions and Answers 2023 - 2

Question: 6

The voltage drop across the electrodes of a mercury pool rectifier

(A) varies inversely as load current

(B) is almost independent of load current

(C) varies linearly with the load current

(D) varies exponentially with the load current

Question: 7

Which of the following material is softer than calcite?

(A) apatite

(B) corundum

(C) gypsum

(D) quartz

Question: 8

A light dependent resistor is basically a

(A) carbon resistor

(B) power resistor

(C) variable resistor

(D) non-metallic resistor

Question: 9

The substance with which a recording tape is coated is

(A) silver nitrate

(B) soft iron

(C) ferrite or iron oxide

(D) pure magnetic steel

Question: 10

Cumulative compound DC motors are suitable for

(A) centrifugal pumps

(B) centre lathes

(C) tool cutting machines

(D) traction