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SSC JE Electrical 2019 with solution SET-2

SSC JE Electrical 2019 with solution SET-2
The force experienced by current-carrying conductor lying parallel to magnetic field is

BIL sinφ
BIL
BIL cosφ
Zero

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SSC JE Electrical 2019 with solution SET-2
In a 4 pole. 20 kW, 200 V wave wound DC shunt generator, the current in each parallel path will be

50 A
100 A
25 A
10 A

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Given
Power (P) = 20 kW = 20 × 103 W
Voltage (V) = 200 V
P = VI = I = P/V
I = (20 × 103)/200
I = 100A
For wave wound No. of Parallel Path = 2
Current in Each parallel Path for wave wound
I = 100/2 = 50 A
 

SSC JE Electrical 2019 with solution SET-2
Which of the following generators offers the poorest voltage regulation?

Series Motor
Shunt
Cumulative compounded
Differential compounded

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SSC JE Electrical 2019 with solution SET-2
Oxygen is a/an ____ gas?

Paramagnetic
Diamagnetic
Ferromagnetic
Inert

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Atoms or ions with unpaired electrons are attracted to a magnetic field; the more unpaired electrons, the greater is the attraction. Such substances are called paramagnetic. Molecular oxygen is a paramagnetic gas by virtue of its two unpaired electrons.
 

SSC JE Electrical 2019 with solution SET-2
A circuit consists of two parallel resistors, having a resistance of 20Ω and 30Ω respectively connected in series with 15Ω. If the current through the 15Ω resistor is 3A, then find the current through 20Ω and 30Ω resistors respectively?

1.8A, 1.2A
2A, 1 A
1A, 2A
1.2A, 1.8A

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SSC JE Electrical 2019 with solution SET-2
The total number of possible phase sequences for a three-phase AC system is ____

0
3
2
1

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A phase sequence is an order or sequence in which the currents or voltages of different phases attain their maximum values. In a three-phase system, there are only two possible phase sequences: R-Y-B (positive Phase Sequence) and R-B-Y (Negative Phase Sequence).

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