Top 80+ Solved Electric Energy Generation Utilization and Conservation MCQ Questions Answer
Q. For the transmission of heat from one body to another
a. temperature of the two bodies must be different
b. both bodies must be solids
c. both bodies must be in contact
d. at least one of the bodies must have some source of heating
Q. A perfect black body is one that
a. transmits all incident radiations
b. absorbs all incident radions
c. reflects all incident radiations
d. absorbs, reflects and transmits all incident radiations
Q. Heat is transferred simultaneously by condition, convection and radiation
a. inside boiler furnaces
b. during melting of ice
c. through the surface of the insulted pipe caring steam
d. from refrigerator coils to freezer of a refrigerator
Q. The process of heat transfer during the re-entry of satellites and missiles, at very high speeds, into earth’s atmosphere is known as
a. ablation
b. radiation
c. viscous dissipation
d. irradiation
Q. Which of the following has the highest value of thermal conductivity?
a. water
b. steam
c. solid ice
d. melting ice
Q. The basic electrical requirement in arc welding is that there should be
a. coated electrodes
b. high open-circuit voltage
c. no arc blow
d. c. power supply.
Q. A.C. welding machine cannot be used for welding
a. mig
b. atomic hydrogen
c. resistance
d. submerged arc.
Q. In electric welding, arc blow can be avoided by
a. using bare electrodes
b. welding away from earth ground connection
c. using a. welding machines
d. increasing arc length
Q. The major disadvantage of carbon arc welding is that
a. there is occurrence of blow holes
b. electrodes are consumed fast
c. separate filler rod is needed
d. bare electrodes are necessary.
Q. The free-running speed of a train does NOT depend on the
a. duration of stops
b. distance between stops
c. running time
d. acceleration.
Q. Longer coasting period for a train results in
a. higher acceleration
b. higher retardation
c. lower specific energy consumption
d. higher schedule spee
Q. Skidding of a vehicle always occurs when
a. braking effort exceeds its adhesive weight
b. it negotiates a curve
c. it passes over points and crossings
d. brake is applied suddenly.
Q. The horsepower of steam locomotives is
a. upto 1500
b. 1500 to 2000
c. 2000 to 3000
d. 3000 to 4000
Q. In tramways which of the following motors is used?
a. d.c. shunt motor
b. d.c. series motor
c. a. three phase motor
d. a.c. single phase capacitor start motor