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This set of Energy Conversion Multiple Choice Questions & Answers (MCQs) focuses on Energy Conversion Set 7

Q1 | Death is almost certain when the current through human body is
  • 100 milli-amperes
  • 10 micro-amperes
  • 25 micro-amperes
  • 100 micro-amperes
  • 10 milli-amperes
Q2 | API gravity of water is taken as
  • zero
  • 1
  • 10
  • 100
  • None of the above
Q3 | Which of the following power plant can generate power at unpredictable or uncontrolled times?
  • Wind power plant
  • Tidal power plant
  • Solar power plant
  • All of the above
  • None of the above
Q4 | Turnaround efficiency of pumped hydro schemes seldom exceeds
  • 10%
  • 15%
  • 25%
  • 65%
  • None of the above
Q5 | Standby losses are least in case of
  • Gas turbine power plant
  • Diesel engine power plant
  • Hydro-electric power plant
  • Steam power plant
  • Nuclear power plant
Q6 | Approximately how many kg of air are required for the combustion of one kg of diesel oil?
  • 15 kg
  • 25 kg
  • 1 kg
  • 35 kg
  • 5 kg
Q7 | Which of the following variety of coal will have highest ash content
  • Grade I steam coal
  • Bituminous coal
  • Coking coal
  • Bengal coal
  • Lignite
Q8 | The effect of wind pressure is more predominant on
  • transmission lines
  • neutral wires
  • insulators
  • supporting towers
  • None of the above
Q9 | Argillaceous rocks have
  • high clay content
  • high moisture content
  • low moisture content
  • low mineral content
  • None of the above
Q10 | Beaufort scale is graded from 0 to
  • 10
  • 12
  • 22
  • 100
  • None of the above
Q11 | In hydrothermal source of geothermal energy
  • hot water or steam is available
  • hot gases are available
  • molten lava is available
  • none of the above
  • None of the above
Q12 | Presence of ozone as a result of corona is harmful because
  • it gives bad odour
  • it corrodes the material
  • it transfers energy to the ground
  • it reduces power factor
  • None of the above
Q13 | The source of energy for satellite is
  • battery
  • solar cell
  • cryogenic storage
  • Any of the above
  • None of the above
Q14 | Which type of power plant will be preferred for a location in Bihar?
  • Nuclear power plant
  • Hydro-electric power plant
  • Thermal power plant
  • Solar power plant
  • None of the above
Q15 | Petrothermal systems are composed of hot dry rock with
  • no underground water
  • large underground water
  • petrochemicals
  • dense gases
  • None of the above
Q16 | The tax imposed on power supplied to consumers is known as
  • excise duty
  • sales tax
  • toll tax
  • electricity duty
  • None of the above
Q17 | The maximum theoretical efficiencies of solar cells could be around
  • 99%
  • 60%
  • 48%
  • 1%
  • None of the above
Q18 | Heavy water production plants in India are located at all the following places EXCEPT
  • Nangal
  • Bombay
  • Baroda
  • Tuticorin
  • None of the above
Q19 | Presence of sand in geopressured water is likely to cause problems of
  • erosion
  • heat exchange
  • water circulation
  • All of the above
  • None of the above
Q20 | Highly skilled manpower is needed for the maintendance of which of the following power plants?
  • Steam power plant
  • Diesel engine power plant
  • Nuclear power plant
  • Gas turbine power plant
  • Hydro-electric power plant
Q21 | The power loss in an overhead transmission line is mainly due to
  • Line resistance
  • Line inductance
  • Heat loss
  • Magnetic loss
  • All of the above
Q22 | Benefication process is mainly used for
  • coals
  • oils
  • nuclides
  • minerals
  • None of the above
Q23 | For a 66 kV transmission line having span of 200 metres between towers, the approximate sag will be
  • 0.02 m
  • 0.2 m
  • 2 m
  • 20 m
  • None of the above
Q24 | Which of following converts thermal energy to kinetic energy?
  • Thermocouple
  • Storage battery
  • Fuel cell
  • Rocket
  • None of the above
Q25 | A 3 phase 15 kW induction motor has a p.f. of 0.75 lagging. A bank of capacitor is connected in delta across the supply terminals and p.f. raised to 0.9 lagging. The KVAR rating of the capacitors connected in each phase will be nearly
  • 4
  • 250
  • 20
  • 2
  • 1