7000+ GATE Practice Test Questions Pdf - 1

Question: 1

An active element in a circuit is one which

(A) Dissipates energy

(B) Receives energy

(C) Supplies energy

(D) Both receives and supplies energy

Question: 2

The developed electromagnetic force and or torque in electromechanical energy conversion system act in a direction that tends

(A) To decrease the stored energy at constant flux

(B) To decrease the co-energy at constant mmf

(C) To decrease the stored energy at constant mmf

(D) To increase the stored energy at constant flux

Question: 3

Two straight parallel conductors carry equal currents in opposite direction. The force between them is

(A) Attractive

(B) Zero

(C) Repulsive

(D) None of these

Question: 4

The operation of electric generators and motors depend on the intraction between magnetic field and

(A) Commutator

(B) Electric fields

(C) Electric current

(D) Copper conductors

Question: 5

In a thermocouple element, heat energy transferred to the hot junction is converted into electrical energy by

(A) Seebeck effect

(B) Johnson's effect

(C) Faraday's effect

(D) Hall effect