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1
GATE EE 1994
MCQ (Single Correct Answer)
+1
-0.3
Two transformers of identical voltage but of different capacities are operating in parallel. For satisfactory load sharing
A
impedances must be equal
B
per-unit impedances must be equal
C
per-unit impedances and $${X \over R}$$ ratios must be equal
D
impedances and $${X \over R}$$ ratios must be equal
2
GATE EE 1994
MCQ (Single Correct Answer)
+1
-0.3
When a transformers winding suffers a short-circuit, the adjoining turns of the same winding experience
A
an attractive force
B
a repulsive force
C
no force
D
none of the above
3
GATE EE 1992
MCQ (Single Correct Answer)
+1
-0.3
Two transformers of the same type, using the same grade of iron and conductor materials, are designed to work at the same flux and current densities; but the linear dimensions of one are two times those of the other in all respects. The ratio of $$kVA$$ of the two transformers closely equals
A
$$16$$
B
$$8$$
C
$$4$$
D
$$2$$
4
GATE EE 1992
MCQ (More than One Correct Answer)
+1
-0
Two transformers of different $$kVA$$ ratings workings in parallel share the load in proportion to their ratings when their
A
per unit leakage impedances on the same $$kVA$$ base are the same
B
per unit leakage impedances on their respective ratings are equal
C
ohmic values of the leakage impedances are inversely proportional to their ratings
D
ohmic values of the leakage magnetizing reactances are the same
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Electric Circuits
Network Elements Transient Response Two Port Networks Sinusoidal Steady State Analysis Network Theorems Three Phase Circuits Graph Theory
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Potentiometer and Instrument Transformers Measurement of Resistance and A.C Bridges Measurement of Energy and Power Cathode Ray Oscilloscope Digital Voltmeters Questions Basic of Indicating Instruments Error Analysis and Measurement
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