Electromagnetism and Electromagnetic Induction MCQ Questions - 1

Question: 1

Linkage flux per unit current is called

(A) Capacitive reactance

(B) Inductance

(C) Resistance

(D) Capacitance

Question: 2

The hysteresis loop for the material of the core of the transformer should be

(A) Tall and wide

(B) Short and wide

(C) Short and narrow

(D) Tall and narrow

Question: 3

When a single turn coil rotates in a uniform magnetic field, at a uniform speed the induced emf will be

(A) Pulsating

(B) Steady

(C) Alternating

(D) None of these

Question: 4

Which one of the following is an essential component of electromagnetic relays?

(A) MOSFET

(B) An electromagnet

(C) LED

(D) Graphite rod

Question: 5

For a permanent magnetic material

(A) The residual induction and the coercive fields should be large

(B) The residual induction and the coercive fields should be small

(C) The area of hysteresis loop should be small

(D) The initial relative permeability should be large