Top 550+ Solved Energy Conversion MCQ Questions Answer
Q. 1 kilowatt hour is the same as
a. 1000 joules
b. 1000 watt-sec
c. 3600 watt-hours
d. 3600,000 watt-sec
e. 1 joule
Q. A 11 kV transmission line carries power to a distance of 30 kilometres. This will be termed as
a. Short transmission line
b. Medium transmission line
c. Long transmission line
d. Very long transmission line
e. None of the above
Q. The dielectric strength of rubber is about
a. 3 kV/mm
b. 30 kV/m
c. 30 kV/cm
d. None of the above
e. All of the above
Q. ACSR conductor having 7 steel strands surrounded by 25 aluminium conductors will be specified as
a. 7?25
b. 7?32
c. 25?7
d. 25?32
e. None of the above
Q. Compressed air is required in diesel engine power plants mainly for
a. Starting the engine
b. Cleaning
c. On fiteration
d. Water aeration
e. All of the above
Q. The chances of corona are maximum during
a. summer heat
b. winter
c. dry water
d. humid weather
e. None of the above
Q. The expected life of a GLS lamp is nearly
a. 50 hours
b. 10,000 hours
c. 5000 hours
d. 1000 hours
e. 100 hours
Q. Neglecting losses in a transmission system, if the voltage is doubled for the same power transmission, the weight of conductor material required will be
a. four times
b. double
c. half
d. one-fourth
e. None of the above
Q. Skin effects is proportional to
a. diameter of conductor
b. (diameter of conductor)
c. (diameter of conductor)2
d. (diameter of conductor)3
e. None of the above
Q. The thickness of the layer of insulation on a cable depends on
a. KVA
b. kW
c. Power factor
d. Voltage
e. Current carrying capacity of conductor
Q. Strain type insulators are used where the conductors are
a. dead ended
b. at intermediate anchor towers
c. any of the above
d. None of the above
e. None of the above
Q. Coal used in power plants is also known as
a. Charcoal
b. Coke
c. Power coal
d. Steam coal
e. Soft coal
Q. The highest point on the load curve represents
a. Maximum time
b. Maximum demand
c. Maximum concrete load
d. KVA rating of generators
e. None of the above
Q. High horse power diesel engines are usually started by
a. Batteries
b. Compressed air
c. Cranking
d. Self-starter or cranking
e. Self-starter