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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