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GETCO Exam Paper (22-07-2015)

GETCO Exam Paper (22-07-2015)
The Z matrix of 2 port network is given by [0.9 0.2 : 0.2 0.6]. The element Y22 of the corresponding Y matrix of the same network is given by

0.4
1.2
-0.4
1.8

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GETCO Exam Paper (22-07-2015)
Critical clearing time of a fault in a power system is related to

Transient stability limit
Reactive power limit
Short circuit limit
Steady state limit

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GETCO Exam Paper (22-07-2015)
For selecting low voltage cable which of the following factors is not important?

short circuit current rating
voltage grade
current carrying capacity
permissible voltage drop

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GETCO Exam Paper (22-07-2015)
For eliminating 7th harmonics from generated EMF in alternator the fractional pitch must be

7\8
5\6
2\3
6\7

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fractional pitch = Cos( α/2)
α is obtain from: (nα/2)=90˚ where n is harmonic
α=25.7143˚
fractional pitch=6/7

GETCO Exam Paper (22-07-2015)
In load flow analysis, the load at the bus is represented as

none of these
a constant impedance connected at the bus
a constant current drawn from the bus
a voltag dependent impedance at the bus

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GETCO Exam Paper (22-07-2015)
Which Indian hindi movie is released most recently (as on 22/07/2015)?

Bajarangi Bhaijaan
Bin Roye
Aisa Yeh Jahaan
Drishyam

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