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GETCO Exam Paper (22-07-2015)

GETCO Exam Paper (22-07-2015)
In rotating electrical machines, the insulation temperature limit for class B type is

130˚C
150˚C
180˚C
105˚C

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

insulation Class and temperature limit(in ˚C) is given below:
Y - 90
A- 105
E- 120
B-130
F-155
H-180
C- above 180

GETCO Exam Paper (22-07-2015)
In a DC motor, back EMF value becomes maximum at _____

no load
1/2 load
full load
3/4 load

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Answer in official key is “1/2 load ”.

GETCO Exam Paper (22-07-2015)
What is the Antonyms of 'ENIGMA'?

Demise
Understood
Energetic
Mystery

ANSWER DOWNLOAD EXAMIANS APP

GETCO Exam Paper (22-07-2015)
In synchronous motor, V-curve is a graph of

Armature current Vs power factor
Armature current Vs Field current
Armature current Vs active power
Armature current Vs reactive power

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

v curve: armature current → field current
Inverted V curve: power factor → field current

GETCO Exam Paper (22-07-2015)
Two heaters rated at 500 W, 250 V each are conneted in series across a 250 V, 50 Hz mains. The total power drawn from the supply would be _____ watt.

1000
125
500
250

ANSWER DOWNLOAD EXAMIANS APP

GETCO Exam Paper (22-07-2015)
An over-current relay of current rating 5 A and setting 150% is connected to a 200/5 A CT. Then the relay to pickup, the line current required is

200
150
300
100

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON GETCO Exam Paper (22-07-2015)

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