1000+ TNPSC Group 4 Question Paper with Answers 2022 - 1

Question: 1

Radio wave of constant amplitude can be generated with

(A) FET

(B) Filter

(C) Oscillator

(D) Rectifier

Question: 2

In a transistor the emitter current is

(A) Equal to the base current

(B) Equal to the collector current

(C) Slightly more than the collector current

(D) Slightly less than the collector current

Question: 3

The expected energy of the electron at absolute zero is called

(A) Potential energy

(B) Work function

(C) Fermi energy

(D) Emission energy

Question: 4

The absorption of radio waves by the atmosphere depends on

(A) The polarization of the atmosphere

(B) Their frequency

(C) Their polarization of the wave

(D) Their distance from the transmitter

Question: 5

Which of the following is not a semiconductor?

(A) Arsenic

(B) Germanium

(C) Silicon

(D) All of these