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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