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This set of Energy Conversion Multiple Choice Questions & Answers (MCQs) focuses on Energy Conversion Set 14
Q1 | The chances of corona are maximum during
- summer heat
- winter
- dry water
- humid weather
- None of the above
Q2 | The expected life of a GLS lamp is nearly
- 50 hours
- 10,000 hours
- 5000 hours
- 1000 hours
- 100 hours
Q3 | Neglecting losses in a transmission system, if the voltage is doubled for the same power transmission, the weight of conductor material required will be
- four times
- double
- half
- one-fourth
- None of the above
Q4 | Skin effects is proportional to
- diameter of conductor
- (diameter of conductor)
- (diameter of conductor)2
- (diameter of conductor)3
- None of the above
Q5 | The thickness of the layer of insulation on a cable depends on
- KVA
- kW
- Power factor
- Voltage
- Current carrying capacity of conductor
Q6 | Strain type insulators are used where the conductors are
- dead ended
- at intermediate anchor towers
- any of the above
- None of the above
- None of the above
Q7 | Coal used in power plants is also known as
- Charcoal
- Coke
- Power coal
- Steam coal
- Soft coal
Q8 | The highest point on the load curve represents
- Maximum time
- Maximum demand
- Maximum concrete load
- KVA rating of generators
- None of the above
Q9 | The voltage of a single solar cell is
- 0.5 V
- 1 V
- 1.1 V
- 2.1 V
- None of the above
Q10 | High horse power diesel engines are usually started by
- Batteries
- Compressed air
- Cranking
- Self-starter or cranking
- Self-starter
Q11 | In case of humic coals, hydrogen percentage varies from
- 4 to 6 percent
- 10 to 15 percent
- 16 to 20 percent
- 20 to 30 percent
- None of the above
Q12 | Which of the following motor can operate on lagging as well as leading power factor?
- Synchronous motor
- Universal motor
- Reluctance motor
- Squirrel cage induction motor
- Capacitor run motor
Q13 | A 200 MW generator will invariably be
- Hydrogen cooled
- Nitrogen cooled
- Air cooled
- Oxygen cooled
- Pressurised air cooled
Q14 | Presence of non-condensable gases in geopressured water causes
- corrosion of parts
- pollution
- flow problems
- All of the above
- None of the above
Q15 | Which of the following place is not associated with nuclear power plants?
- Narora
- Kamalappakam
- Tarapur
- Kora
- Bangalore
Q16 | Pearlite is
- a low ash containing coal
- same as lignite
- an insulation material
- none of the above
- None of the above
Q17 | The term 'critical' is associated with which type of power plant?
- Gas turbine power plant
- Steam power plant
- Hydro-electric power plant
- Diesel engine power plant
- Nuclear power plant
Q18 | Reverse capacity of a plants is given by
- Maximum demand - Average demand
- Plant capacity - Maximum demand
- Plant capacity - Average demand
- Plant capacity x (1 - Load factor)
- None of the above
Q19 | The standard wattage of 4 feet fluorescent tube is
- 500 W
- 250 W
- 10 W
- 40 W
- 100 W
Q20 | Standed conductors are used for transmitting power at high voltages because of
- increased tensile strength
- low cost
- case in handling
- low wind resistance
- None of the above
Q21 | In a transmission line if booster transformer is to be used, the preferred location will be
- at the receiving end
- at the sending end
- at the intermediate point
- anywhere in the line
- None of the above
Q22 | For the same wattage, which of the following lamp is cheapest?
- Fluorescent tube 2 ft.
- GLS lamp
- Fluorescent tube 4 ft.
- Mercury vapour lamp
- Sodium vapour lamp
Q23 | One British thermal unit (BTU) is nearly equal to
- 252 joules
- 2106 joules
- 243 joules
- 1053 joules
- 504 joules
Q24 | At which of a following speed the generators for 3 phase, 50 Hz supply will not run?
- 1200 rpm
- 500 rpm
- 250 rpm
- 166? rpm
- 750 rpm
Q25 | The specific gravity of diesel oil is closer to
- 2.7
- 0.35
- 1
- 0.84
- 1.35