VSSC Electrician Paper 2015 | Vikram Sarabhai Space Center Electrician Paper 2015
The capacity of a capacitor used in power factor correction is expressed in terms of
(a) KVA
(b) KW
(c) KWH
(d) KVAR
The resistance of a wire will double, if we double its
(a) Area
(b) Temperature
(c) Length
(d) Weight
Time constant for an R-L series circuit is given by
(a) R/L
(b) L/R
(c) 1/RL
(d) RL
Power factor of a purely resistive circuit is
(a) zero
(b) unity
(c) lagging
(d) leading
A heater is rated as 230 V, 1000 W A.C, the value of 230 V refers to
(a) peak voltage
(b) RMS voltage
(c) average voltage
(d) instantaneous voltage
As the frequency increases, the capacitive reactance of the circuit
(a) decreases
(b) increases
(c) remains same
(d) first increases then decreases
The current in an RLC series circuit at resonance is
(a) maximum
(b) minimum
(c) infinity
(d) zero
Which of the following DC motors is suitable for high starting torque?
(a) shunt motor
(b) commutative compound motor
(c) series motor
(d) compound motor
The no load voltage of a generator is 230 V and the rated load voltage is 200V, then the voltage regulation is
(a) 5%
(b) 10%
(c) 15%
(d) 20%
The transformer oil used in transformer provides
(a) insulation & cooling
(b) cooling & lubrication
(c) insulation & lubrication
(d) insulation, cooling & lubrication
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