SSC JE Electrical Model Test-1

SSC JE Electrical Model Test-1

MCQ based on SSC JE Syllabus

Important for SSC JE

1.The reactive power generated by a synchronous alternator
can be controlled by
(a) changing the prime move input
(b) changing the alternator speed
(c) changing the field excitation
(d) changing the terminal voltage

2. The per phase DC armature resistance of an alternator is
0.5ohm. The effective AC armature resistance would be about
(a) 0.25 ohm (b) 0.5 ohm
(c) 0.75 ohm (d) 1 ohm

3. Base load of a power station stands for
(a) 2 – 4 hours/day (b) 4 – 8 hours/day
(c) 8 – 12 hours/day (d) 12 – 24 hours/day

4. If the power factor is high, then the consumer maximum
KVA demand
(a) increases (b) decreases
(c) remains constant (d) becomes zero

5. A circuit breaker is rated as follows:
1500 A, 33 KV, 3 sec, 3-phase oil circuit breaker. Determine
the making current
(a) 1.5 KA (b) 35 KA
(c) 89 KA (d) 110 KA

6. Which of the following fault is coming under symmetrical
fault?
(a) LG fault (b) LL fault
(c) LLG fault (d) LLLG fault

7. If span length is doubled with no change in other factors,
the sag of the line will become
(a) 0.5 time (b) 2 times
(c) 4 times (d) 8 times

8. The aluminum conductor of size_____is used for a
subcircuit in domestic wiring
(a) 1/1.2 mm (b) 1/1.4 mm
(c) 1/1.8 mm (d) 1/2.24 mm

9. If in an RLC series circuit, the frequency is below the
resonant frequency, then
(a) XC = XL (b) XC < XL
(c) XC > XL (d) None of the above

10. An RLC series circuit has R = 10 ohm, L = 2 H. What value
of capacitance will make the circuit critically damped?
(a) 0.02 F (b) 0.08 F
(c) 0.2 F (d) 0.4 F

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