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This set of Energy Conversion Multiple Choice Questions & Answers (MCQs) focuses on Energy Conversion Set 13
Q1 | When the power is to be transmitted over a distance of 580 km, the transmission voltage should be in the range
- 33 kV - 66 kV
- 66 kV - 100 kV
- 110 kV - 150 kV
- 150 kV - 200 kV
- None of the above
Q2 | Geothermal energy is
- a renewable energy source
- an alternative energy source
- an inexhaustible energy source
- any of the above
- None of the above
Q3 | In a power plant, if the system voltage is dropped by 10 percent, the load will drop by about
- 1 percent
- 5 percent
- 10 percent
- 20 percent
- None of the above
Q4 | A micro hydel project has
- low head availability
- low power potential
- low discharge
- All of the above
- None of the above
Q5 | Which of the following needs to be filtered in a diesel engine?
- Air and diesel oil only
- Air only
- Lubrecating oil only
- Air, diesel oil and lubricating
- Diesel oil only
Q6 | All of the following are hard coals EXCEPT
- Authracite
- Lignite
- Bituminous
- Semi-bituminous
- None of the above
Q7 | For transmission lines the standing wave ratio is the ratio of
- maximum foltage to minimum voltage
- maximum current to minimum voltage
- peak voltage to rms voltage
- maximum reactance to minimum reactance
- None of the above
Q8 | Reflecting mirrors for solar energy are known as
- diffusers
- ponds
- heliostats
- mantle
- None of the above
Q9 | Litz wire, is used for intermediate frequencies to overcome
- corona effect
- skin effect
- radio interference
- All of the above
- None of the above
Q10 | The insulators for overhead lines are generally made of
- Porcelain
- Wood
- Copper
- Plastic
- Aluminium
Q11 | Which type of conductors are used for transmitting bulk of power at high voltage?
- ACSR
- Copper
- Cadmium copper
- Galvanised steel
- Any of the above
Q12 | The major constituent of natural gas is
- Hydrogen
- Carbon monoxide
- Ammonia
- Methane
- Acetylene
Q13 | Long distance electric trains take power on
- 600 V dc
- 25 kV single phase ac
- 25 kV two phase ac
- 1500 V dc
- 25 kV three phase ac
Q14 | Wind form of power generation are being established at
- Kutch
- Tuticorin
- J & K
- all above places
- None of the above
Q15 | Which lamp is used for cinerma projectors
- Carbon arc lamp
- Nitrogen filled GLS lamp
- Mercury vapour lamp
- Sodium vapour lamp
- Frosted GLS lamp
Q16 | A load curve is the relationship between load on power plant with the
- average time
- instantaneous time
- time in chronological order
- algebraic sum of times
- None of the above
Q17 | Heavy water is used in a nuclear power plant as a
- Coolant
- Reflector
- Fuel
- Shield
- Moderator
Q18 | The power factor of a three phase induction motor at no load will be
- 0.5 to 0.6 leading
- 0.5 to 0.6 lagging
- 0.2 to 0.3 lagging
- Zero
- 0.2 to 0.3 leading
Q19 | 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
- 12.5
- 212.5
- 25
- 125
- 75
Q20 | One kilowatt hour is equal to
- 86,000 calories
- 8600 calories
- 860,000 calories
- 8600,000 calories
- 86,000,000 calories
Q21 | 1 kilowatt hour is the same as
- 1000 joules
- 1000 watt-sec
- 3600 watt-hours
- 3600,000 watt-sec
- 1 joule
Q22 | A 11 kV transmission line carries power to a distance of 30 kilometres. This will be termed as
- Short transmission line
- Medium transmission line
- Long transmission line
- Very long transmission line
- None of the above
Q23 | The dielectric strength of rubber is about
- 3 kV/mm
- 30 kV/m
- 30 kV/cm
- None of the above
- All of the above
Q24 | ACSR conductor having 7 steel strands surrounded by 25 aluminium conductors will be specified as
- 7?25
- 7?32
- 25?7
- 25?32
- None of the above
Q25 | Compressed air is required in diesel engine power plants mainly for
- Starting the engine
- Cleaning
- On fiteration
- Water aeration
- All of the above