Murray loop test can be used for location of
A. ground fault on a cable
B. short circuit fault on a cable
C. both the ground fault and the short-circuit fault
D. none of the above
Answer: Option C
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D.C. machines designed with a large value of air gap length have
A. worst, ventilation
B. poor ventilation
C. better ventilation
D. none of the above
_________ electromagnets generally function as holding magnets.
A. Tractive
B. Portative
C. Either of the above
D. None of the above
By which of the following methods motor rating for variable load drives can be determined ?
A. Method of average losses
B. Equivalent current method
C. Equivalent torque method
D. Equivalent power method
E. All of the above
In direct cooled system using hydrogen both stator and rotor conductors are made
A. solid
B. hollow
C. perforated
D. any ofthe above
Murray loop test for cable is __________ *
4 points
a) based on uniform voltage drop per unit length principle
b) used to find the exact location of fault
c) both (a) & (b)
d) None of these