- (A) Inverse time trip
- (B) Time-delay trip
- (C) Shunt trip
- (D) None of the above
- (E) All of the above
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- (A) protect the line
- (B) open the circuit
- (C) protect the appliance
- (D) prevent excessive currents
- (E) none of the above
- (A) from south pole to north pole
- (B) from north pole to south pole
- (C) from one end of the magnet to another
- (D) none of the above
- (A) which is a good conductor
- (B) which is a bad conductor
- (C) which is a strong magnet
- (D) through which the magnetic lines of force can pass very easily
- (A) iron
- (B) copper
- (C) aluminium
- (D) moving charges
- (A) weak magnets
- (B) temporary magnets
- (C) permanent magnets
- (D) none of the above
- (A) field strength
- (B) inductance
- (C) flux density
- (D) flux
- (A) paramagnetic
- (B) diamagnetic
- (C) ferromagnetic
- (D) none of the above
- (A) proportional to 7
- (B) proportional to X
- (C) proportional to distance between the conductors
- (D) inversely proportional to I
- (A) short-circuits
- (B) heavy loads
- (C) grounds
- (D) all of the above
