71.

72.

73.

74,

75.

76.

77.

78.

79.

Three phase induction motor started by DOL starter, the short circuit current is protected by

(ಹ) No volt coil (B) Overload relay
(9) Back off fuse (D) Protective earth connection

Cables are drawn through the pipe and terminated. The system of wiring is called
(ಹ) PVC casing and caping wire (8) Conduit wiring
(ಲ) Teak wood batton wiring (D) Teak wood casing caping wiring

As compared to rewirable fuses HRC fuse have .
(ಹ) High speed of operation (B) High rupturing capacity
(ಲ) No ageing effect (D) Low rupturing capacity

The following application D.C. is essential .
(ಹ) Electric traction motor (B) Electric home appliances
(ಲ) Machine shop motor (D) Tlumination

Which of the following does not change in a transformer ?
(A) Current (B) Voltage (ಲ) Frequency (D) All of these

Which winding in a transformer has more number of turns ?
(ಹ) Low voltage winding

(B) High voltage winding

(C) Winding does not depend upon number of turns

(D) None of these

In a D.C. machine the number of brushes in lap winding is 5
(5) Same number of poles (8) Double number of poles
(ಲ) Half of the number of poles (D) Two numbers

Compensating windings are used in D.C. generator is .
(5) To reduce eddy current by local short circuit

(B) To provide path for the circulation of cooling air

(ಲ) To neutralize the cross magnetic effect of armature reaction
(D) None of these

Red colour wire is generally known for -
(ಹ) Insulated wire (8) Earth wire

(ಲ) Neutral wire (D) Phase wire
11 098/2018

{P.T.O}