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This set of Energy Conversion Multiple Choice Questions & Answers (MCQs) focuses on Energy Conversion Set 18
Q1 | In high voltage transmission lines the top most conductor is
- R-phase conductor
- Y-phase conductor
- B-phase conductor
- Earth conductor
- None of the above
Q2 | A sodium graphite reactor uses
- sodium as moderator and graphite as coolant
- sodium as coolant and graphite as moderator
- a mixture of sodium and graphite as coolant
- a mixture of sodium and graphite as moderator
- None of the above
Q3 | The material used for insulation on the cable is
- Impregnated paper
- Varnished cambric
- Rubber mineral compound
- Any of the above
- None of the above
Q4 | Ekman spiral is an idealized mathematical description of
- ocean temperature gradient
- wind distribution in the planetary boundary layer
- carbon dioxide percentage variation with elevation
- radioactive decay of materials
- None of the above
Q5 | In order to reduce skin effect at UHF
- conductors are painted
- conductors are anodised
- copper tubes with silver plating are used
- copper rods with silver plating are used
- None of the above
Q6 | Certain metals become super-conducting when cooled below
- melting point
- transition temperature
- 0?K
- 0?C
- None of the above
Q7 | Which of the following material has high scrap value as compared to initial cost?
- Copper
- Aluminium
- Steel
- Cast iron
- Wood
Q8 | Which plant has least pollution problem?
- Steam power plant
- Nuclear power plant
- Gas turbine power plant
- Hydro-electric power plant
- Diesel engine power plant
Q9 | In which power plant chimney is not needed?
- Gas turbine power plant
- Steam power plant
- Hydro-electric power plant
- All of the above
- None of the above
Q10 | Attemperation is
- the process of reducing pollution through stack gases
- the process of energy conservation by the use of economiser, etc.
- preheating of water before admission to boiler
- the reduction of steam temperature
- None of the above
Q11 | In ACSR conductors
- varnish is the insulation used
- bitumen is the insulation between aluminium and steel
- no insulation is used between aluminium and steel
- air acts as insulation medium between aluminium and steel
- None of the above
Q12 | The standard frequency of electric power supply in India is
- 440 Hz
- 50 Hz
- 1 Hz
- 60 Hz
- 220 Hz
Q13 | HBJ pipeline orginates from
- Gujarat and ends in Bihar
- Maharashtra and ends in Uttar Pradesh
- Maharashtra and ends in Bihar
- Gujarat and ends in Uttar Pradesh
- None of the above
Q14 | Which authority is directly concerned with generation and distribution of electricity?
- Electricity Authority of India
- Department of Science and Technology
- Ministry of Power
- State Electricity Boards
- None of the above
Q15 | An air preheater is an essential part of which of the following power plant?
- Hydro-electric power plant
- Nuclear power plant
- Gas turbine power plant
- Steam power plant
- Diesel engine power plant
Q16 | The compressor used in gas turbine is usually
- Lobe type compressor
- Multistage axial flow compressor
- Multistage reciprocating compressor
- Single stage reciprocating compressor
- Screw compressor
Q17 | Hot template curves are the plot of
- conductor sags and span lengths
- temperature and ground clearance
- temperature and humidity
- conductor weight and sag
- None of the above
Q18 | In a steam locomotive the power is generated in
- Double acting non-condensing steam engine
- Single acting condensing steam engine
- Single acting non-condensing steam engine
- Double acting condensing steam engine
- Steam turbine
Q19 | Which of the following domestic utility item consumes least power?
- Electric iron
- Toaster
- Electric shaver
- Desert cooler
- Heat convector
Q20 | Tidal energy source mainly makes use of
- kinetic energy of water
- potential energy of water
- both kinetic as well as potential energy of water
- None of the above
- None of the above
Q21 | The carbon percentage in diesel oil is nearly
- 52%
- 74%
- 66%
- 86%
- 100%
Q22 | Gas turbines are widely used in
- Power generation
- Pumping stations
- Aircraft
- Ship
- Locomotive
Q23 | The alternators for a steam power plant usually run at
- 1200 rpm
- 3000 rpm
- 1500 rpm
- 750 rpm
- 30,000 rpm
Q24 | When a conductor is suspended between two supports at the same level it taken the shape of
- Cycloid
- Epicycloid
- Parabola
- Semi-circle
- Catenary
Q25 | A 660 V cable is known as
- Extra super voltage cable
- High tension cable
- Super tension cable
- Extra high tension cable
- Low tension cable