Top 550+ Solved Energy Conversion MCQ Questions Answer
Q. All of the following are hard coals EXCEPT
a. Authracite
b. Lignite
c. Bituminous
d. Semi-bituminous
e. None of the above
Q. For transmission lines the standing wave ratio is the ratio of
a. maximum foltage to minimum voltage
b. maximum current to minimum voltage
c. peak voltage to rms voltage
d. maximum reactance to minimum reactance
e. None of the above
Q. Reflecting mirrors for solar energy are known as
a. diffusers
b. ponds
c. heliostats
d. mantle
e. None of the above
Q. Litz wire, is used for intermediate frequencies to overcome
a. corona effect
b. skin effect
c. radio interference
d. All of the above
e. None of the above
Q. The insulators for overhead lines are generally made of
a. Porcelain
b. Wood
c. Copper
d. Plastic
e. Aluminium
Q. Which type of conductors are used for transmitting bulk of power at high voltage?
a. ACSR
b. Copper
c. Cadmium copper
d. Galvanised steel
e. Any of the above
Q. The major constituent of natural gas is
a. Hydrogen
b. Carbon monoxide
c. Ammonia
d. Methane
e. Acetylene
Q. Long distance electric trains take power on
a. 600 V dc
b. 25 kV single phase ac
c. 25 kV two phase ac
d. 1500 V dc
e. 25 kV three phase ac
Q. Wind form of power generation are being established at
a. Kutch
b. Tuticorin
c. J & K
d. all above places
e. None of the above
Q. Which lamp is used for cinerma projectors
a. Carbon arc lamp
b. Nitrogen filled GLS lamp
c. Mercury vapour lamp
d. Sodium vapour lamp
e. Frosted GLS lamp
Q. A load curve is the relationship between load on power plant with the
a. average time
b. instantaneous time
c. time in chronological order
d. algebraic sum of times
e. None of the above
Q. Heavy water is used in a nuclear power plant as a
a. Coolant
b. Reflector
c. Fuel
d. Shield
e. Moderator
Q. The power factor of a three phase induction motor at no load will be
a. 0.5 to 0.6 leading
b. 0.5 to 0.6 lagging
c. 0.2 to 0.3 lagging
d. Zero
e. 0.2 to 0.3 leading
Q. The power factor of a load of 100 kW is to be raised from 0.5 lagging to 0.9 lagging. The KVA rating of the capacitor will be
a. 12.5
b. 212.5
c. 25
d. 125
e. 75
Q. One kilowatt hour is equal to
a. 86,000 calories
b. 8600 calories
c. 860,000 calories
d. 8600,000 calories
e. 86,000,000 calories