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SSC JE Electrical 2019 with solution SET-2

SSC JE Electrical 2019 with solution SET-2
Observe the given figure. Find Thevenin’s resistance as seen from open-circuited terminals?

32 Ω
4 Ω
8 Ω
16 Ω

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To find the Thevenin’s resistance the current source is open-circuited and the voltage source is short-circuited.


SSC JE Electrical 2019 with solution SET-2
Which of the following is the correct way of expressing the rating of a fuse?

Amperes
Watts
Ampere-hours
Volts

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

Ferromagnetic
Diamagnetic
Paramagnetic
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
Which of the following instruments has a uniform scale?

Moving iron type
PMMC type
Electrodynamic type
Dynamometer type

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In the PMMC type instrument, the deflection is directly proportional to the current flowing through the instrument, we get a uniform scale for the instrument. It gives a uniform scale of upto 270° or more.
Td ∝ I

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?

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

3
1
2
0

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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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