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Q11
A system having connected load of 100 kW, peak load of 80 kW. base load of 20 kW and average load of 40 kW, will have a load factor of
  • A 40%
  • B 50%
  • C 60%
  • D 80%.
Answer: Option B
Q12
Load due to one tonne air conditioner is nearly
  • A (A)100W
  • B 200 to 500 W
  • C 1 kW to 2 kW
  • D 5 kW to 10 kW.
Answer: Option C
Q13
Load due to a ceiling fans is nearly
  • A 10W
  • B 40 to 50 W
  • C 100 to 200 W
  • D 250 W to 2000 W
Answer: Option C
Q14
Which domestic utility item has highest power rating ?
  • A Refrigerator
  • B Ceiling fan
  • C Tube light
  • D Electric iron.
Answer: Option D
Q15
A stereo with two 10 watt loudspeakers will provide electrical load of
  • A more than 12 W
  • B (B)12 W
  • C less than 6 W
  • D 6 W.
Answer: Option C
Q16
A steam power station will run with maximum efficiency when it is run
  • A at low steam pressures
  • B on pulverized coal
  • C at higher speeds
  • D near full load.
Answer: Option D
Q17
Which of the following is likely to result in lower efficiency of a power station ?
  • A Varying loads
  • B Low voltage generation
  • C Low turbine speeds
  • D Non-automatic controls.
Answer: Option A
Q18
In a 440 V system, in order to obtain the minimum cost and maximum benefits, the capacitor should be installed
  • A at the load
  • B near the transformer
  • C any where in the circuit
  • D near the earthling point.
Answer: Option A
Q19
In case of medium sized induction motor, the power factor will be maximum at
  • A No load
  • B 50% load
  • C Full load
  • D Power factor remains constant at all loads.
Answer: Option C
Q20
A coaxial line is filled with a dielectric of relative permitivity 9. If C denotes the velocity of propagation in free space, the velocity of propagation in the line will be
  • A 3 C
  • B C
  • C C / 3
  • D C / 9.
Answer: Option C

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