For the same maximum pressure and heat input, the most efficient cycle is
A.Brayton
B.Otto
C.Diesel
D.Dual
Category: Heat Engines Mcqs
Which variety of coal has low calorific value?
A.Steam coal
B.Bituminous coal
C.Lignite
D.Anthracite
Capacitor kVA required to bring the power factor of a 500 kW load 70% to 85% would be
A.100 kVA
B.150 kVA
C.200 kVA
D.250 kVA
E.300 kVA
Tidal power is the power generated from
A.Waves of the ocean
B.Rise and fall tides
C.Thermal energy of ocean water
D.Raw sea water
E.Chemicals in sea water
All but one of the following possible steam generator test difficulties would cause the apparent performance to be poorer than it actually is. One item would make the performance look better than it really is. Identify the item
A.Steam flow meter reads low
B.Steam temperature gauge reads too high
C.HHV of fuel is determined incorrectly, being too high
D.Coad scales are inaccurate, reading high
Turbidity in boiler feed water causes
A.Sludge
B.Embrittlement
C.Corrosion
D.Scale
E.None of the above
Samples of exhaust gases from following engines have been collected:
A.Petrol engine
B.Diesel engine
C.Gas engine
D.Jet propulsion unit
A perfect heat engine works on the Carnot cycle between 1000?C and 200?C. The efficiency of the engine will be
A.80%
B.60%
C.42.80%
D.37.20%
E.62.80%
Steam trap is a device that
A.Allows passage of water but prevents the passage of steam
B.Allows passage of air but prevents passage of steam
C.Allows passage of the flue gases but prevents flow of steam
D.None of the above
A wankel engine is
A.Rotory engine
B.Reciprocating engine
C.Hybrid engine
D.Turbine engine
E.Jet engine
