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This set of Energy Conversion Multiple Choice Questions & Answers (MCQs) focuses on Energy Conversion Set 22
Q1 | In a diesel engine, the consumption of diesel oil per BHP per hour is nearly
- 1250 grams
- 10 grams
- 100 grams
- 850 grams
- 200 grams
Q2 | The formula for Cetane is
- C10H24
- C6H15
- C12H32
- C16H34
- C10H12
Q3 | The vacuum inside a incandescent lamp is of the order of
- 10-3 mm Hg
- 10-2 mm Hg
- 10-4 mm Hg
- 10-5 mm Hg
- 10-6 mm Hg
Q4 | When pulverised fuel is not used the equipment used for feeding coal to the boiler is
- Burner
- Stoker
- Heater
- Regenerator
- Feed pump
Q5 | The specific gravity of aluminium is
- 1.71
- 4.71
- 2.71
- 5.71
- 3.71
Q6 | The illumination level in the houses is usually in the range
- 2500 to 3000 lumens/m2
- 10 to 20 lumens/m2
- 1200 to 1600 lumens/m2
- 100 to 1400 lumens/m2
- 400 to 650 lumens/m2
Q7 | For under water movement of a submarine the power is provided by
- Batteries
- Thermoionic converters
- Solar energy
- Geothermal energy
- Tidal energy
Q8 | Which of the following is considered to be superior quality coal for power plants?
- Lignite
- Coke
- Pulverised coal
- Peat
- Bituminous coal
Q9 | The string efficiency in an ac system is
- 100%
- 70.70%
- Zero
- 50%
- 25%
Q10 | For low head and high discharge the hydraulic turbine preferred is
- Jonval turbine
- Kaplan turbine
- Fourneyron turbine
- Pelton wheel
- Francis turbine
Q11 | The initial cost of an equipment is Rs. 20 lakhs and depreciated cost after ten years is Rs. 15 lakhs. The useful life of the equipment is
- 15 years
- 5 years
- Cannot be determined on the basis of the information provided
- 10 years
- 20 years
Q12 | Which of the following domestic utility item consumes maximum power?
- Exhaust fan
- Ceiling fan
- Refrigerator
- Cooking range
- Mixer grinder
Q13 | Satellites are powered by
- Batteries
- Solar cells
- Thermo-electric generators
- Thermoionic converters
- Photo electric cells
Q14 | The calorific value of lignite is expected to be around
- 1000 kcal/kg
- 2500 kcal/kg
- 5000 kcal/kg
- 10,000 kcal/kg
- 1500 kcal/kg
Q15 | Diesel locomotives in India are manufactured at
- Ajmer
- Varanasi
- Chitranjan
- Parambur
- Bangalore
Q16 | Which of the following needs to be filtered in a diesel engine?
- Diesel oil only
- Lubrecating oil only
- Air only
- Air, diesel oil and lubricating
- Air and diesel oil only
Q17 | The insulators for overhead lines are generally made of
- Wood
- Aluminium
- Plastic
- Copper
- Porcelain
Q18 | The major constituent of natural gas is
- Hydrogen
- Methane
- Acetylene
- Carbon monoxide
- Ammonia
Q19 | Long distance electric trains take power on
- 25 kV three phase ac
- 1500 V dc
- 600 V dc
- 25 kV single phase ac
- 25 kV two phase ac
Q20 | Which lamp is used for cinerma projectors
- Carbon arc lamp
- Frosted GLS lamp
- Mercury vapour lamp
- Sodium vapour lamp
- Nitrogen filled GLS lamp
Q21 | Heavy water is used in a nuclear power plant as a
- Fuel
- Reflector
- Moderator
- Shield
- Coolant
Q22 | The power factor of a three phase induction motor at no load will be
- 0.5 to 0.6 leading
- 0.2 to 0.3 lagging
- Zero
- 0.2 to 0.3 leading
- 0.5 to 0.6 lagging
Q23 | 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
- 125
- 212.5
- 25
- 12.5
- 75
Q24 | One kilowatt hour is equal to
- 8600,000 calories
- 86,000,000 calories
- 860,000 calories
- 86,000 calories
- 8600 calories
Q25 | 1 kilowatt hour is the same as
- 1 joule
- 1000 watt-sec
- 1000 joules
- 3600 watt-hours
- 3600,000 watt-sec