Electrical Engineering

(a) all.

(b) skin effect is better as the conductor are tubular, specially in case of high frequency.

(c) the surface area of multistrand cable is more as compared to the surface area of equivalent single solid conductor, so heat radiating

(d) the multistrand cables are more flexible and durable and therefore, can be handled conveniently.

(a) avoid saturation of field.

(b) permit mechanical clearance.

(c) increase flux density in the air gap.

(d) reduce the reluctance of the magnetic path.

(a) 19.60kW

(b) 9.80kW

(c) 4.45kW

(d) 2.90kW

(a) 282.8 A

(b) 150A

(c) 141A

(d) 70.7A

(a) πV₁/2V₂

(b) 2V₁/V₂

(c) 1.11 V₁/V₂

(d) V₁/V₂

(a) None

(b) The resistance of a wire doesn't depend upon its material.

(c) The resistance of wire is independent of the temperature for most of the materials.

(d) The resistance of a conductor is the hindrance by which the conductor opposes the flow of current through it.

(a) electrically linked.

(b) not linked at all.

(c) inductively linked.

(d) conductively linked.

True

False

(a) all.

(b) distributors.

(c) service mains.

(d) transformer substations (step-up).