TNPSC General Science Question Bank - 2

Question: 6

Which of the following devices does not allow d.c. to pass through?

(A) capacitor

(B) inductor

(C) resistor

(D) all the above

Question: 7

In a speedometer the magnet is placed inside a cylinder or drum made up of

(A) aluminium

(B) copper

(C) manganin

(D) steel

Question: 8

Average value of the alternating current over one complete cycle is

(A) zero

(B) unity

(C) finite

(D) infinite

Question: 9

AC generator works on the principle of

(A) mutual induction

(B) electrodynamic induction

(C) electrostatic induction

(D) electromagnetic induction

Question: 10

In Fleming's right hand rule, the thumbs shows direction of

(A) motion of the conductor

(B) magnetic field

(C) electric field

(D) current