[=

62. The number of parallel paths in a 4 pole wave wound ೮೦ machine is
A) 4 B) 2
08 D) 1

_ ॥ 0166/10 obtain maximum generated EMF in the armature of a de generator, what should
be the shape of field flux waveform 9
A) Flat topped waveform
B) Sinusoidal waveform
C) Triangular
D) Ramp shaped

, Match the following starters and the motors in which they are employed ?
| ॥
1. Three pointer starter i. DC shunt motor with field control
2. Four point starter ii, ೧೦ shunt motor without field control
3. Two point starter iii, DC series motor
A) 14, 2-i, 3-1 B) 1-, 2-1, 3-॥
©) 1-॥, 2-4, 3-1 0) 1-, 2-8, 3

, In case of compound de machines, the reason/reasons for keeping the series field wound
over the shunt field coil is/are
A) Convenience in construction
B) For better cooling
C) To improve commutation
D) Both (A) and (8)

. The main reason for improper commutation in case of de machine is
A) Inductance of armature winding
8) Use of interpoles
C) Use of compensating winding
D) Field flux

_ Along shunt ೮೦ compound generator delivers 2.2 kW at 220 V. If armature resistan
is 0.1 ohms, series field winding resistance is 0.2 ohms and shunt field resistance i
110 ohms, calculate the value of armature current in amperes.

A) 10A B) 8A
©) 12A 0) 6A

-10-