ELECTRICAL ENGINEERS PRE-BOARD EXAMINATION AUGUST 2012
Authored by John Anthony Torres
Engineering
University
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37 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Overvoltage relay device function number
64
56
60
59
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A test used to determine the equivalent resistance of an induction motor is _.
No-load Test
Short-circuit Test
Blocked-rotor Test
Polarity Test
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The unit of retentivity is
Ampere turn
ampere turn/weber
ampere turn/meter
dimensionless
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
in running condition the rotor reactance of 3Φ induction motor is proportional to
induced emf
slip
supply voltage
rotor resistance
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The ratio of the total flux to useful flux is called _.
Mutual flux
Flux Factor
Leakage Factor
Magnetic Factor
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
With reduction of load on alternator
the frequency decreases
the frequency increases
the frequency oscillates
the frequency remains the same
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The process by which metallic parts are demagnetized is called
degreasing
degaussing
degrading
demagnetizing
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