Diesel power plants Diesel Engine Power plants Multiple Choice Questions  with Answers 1. What is the maximum temperature in the I.C. engine cylinder is of the order of(in degree Celsius)? a) 500-1000 b) 1000-1500 c) 1500-2000 d) 2000-2500 Answer: 2000-2500 2. The thermal efficiency of diesel engines is about __________ a) 30% b) 15% c) 50% d) 70% Answer: 70% 3. The thermal efficiency of a standard Otto cycle for a compression ratio of 5.5 will be __________ a) 20% b) 25% c) 50% d) 55% Answer: 50% 4. The specific fuel consumption per B.P. hour for a petrol engine is about __________ a) 0.2 kg b) 0.25 kg c) 0.3 kg d) 0.35 kg Answer: 0.25 kg 5. Maximum temperature developed in a diesel engine is in the range of a) 2000 - 2500 °C b) 500 – 1000 °C c) 1500 – 2000 °C d) 1000 – 1500 °C Answer: 2000 -2500 °C 6. Calculate the overall efficiency of the diesel plant if the fuel consumption is 0.24 kg per kWh and the calorific value of the fuel being 10000 kcal/kg. a) 30.78 b) 35.83 c) ...

  Gas Turbine Power Plant Gas Turbine Power Plant Objective Questions and Answers 1. Maximum temperature of a gas turbine plant is of the order of _________ a) 7000 b) 9000 c) 21000 d) 25000 Answer: 7000 2. For a gas turbine the pressure ratio in the range of _________ a) 2 to 3 b) 3 to 5 c) 16 to 18 d) 18 to 22 Answer: 3 to 5 3. What percent of installed capacity of gas turbines contribute to the total installed capacity of the power plants in India. a) 5 % b) 8 % c) 11 % d) 15 % Answer: 11 % 4. What part or % of power developed is utilised for driving the compressor? a) 65 % b) 70 % c) 55 % d) 80 % Answer: 65 % 5. The heating value of gaseous fuels is about _____________ a) 500 kJ/litre b) 30 kJ/litre c) 100 kJ/litre d) 10 kJ/litre Answer: 30 kJ/litre 6. Thermal efficiency of a gas turbine power plant as compared to diesel engine plant is _______ a) Higher b) Lower c) Same d) May be higher or lower Answer: Lower 7. Gas turbine power plant is _________ efficient than steam tu...

  Hydroelectric Power Plant Multiple Choice Questions and Answers   Introduction of Hydroelectric Power Plant Objective Questions and Answers 1. Hydroelectric power plant is __________ a) Non-renewable source of energy b) Conventional source of energy c) Non-conventional source of energy d) Continuous source of energy Answer: Conventional source of energy 2. Which statement about hydroelectric power plant is wrong? a) Efficiency of hydroelectric power plant does not reduce with age b) Its construction coast is very high and takes a long time for erection. c) It is very neat and clean plant because no smoke or ash is produced. d) Meeting rapidly changing load demands is not possible in hydroelectric power plant. Answer: Meeting rapidly changing load demands is not possible in hydroelectric power plant. 3. Which of the following is not a requirement for site selection of hydroelectric power plant? a) Availability of water b) Large catchment area c) Rocky land d) Sedimentation An...

  Nuclear Power Plants Multiple Choice Questions and Answers Chemical & Nuclear Reactions Multiple Choice Questions and Answers 1. The time taken for a radioactive element to reduce to 50% of its original weight is __________ years if its half-life period is 12 years. a) 24 b) 6 c) 18 d) 48 Answer: 18 2. The amount of a radioactive material (having a half-life of 100 years) remaining after 400 years will be __________ of its original weight. a) 0.5 b) 0.25 c) 1/8 d) 1/16 Answer: 1/16 3. An electron has a mass that is approximately __________ that of the proton. a) 1/1836 b) 1 c) 1836 d) none of the mentioned Answer: 1/1836 4. The amount of a radioisotope remaining un-decayed after a time equal to four times its half-life will be __________ percent. a) 3.125 b) 6.25 c) 12.50 d) 25 Answer: 6.25 5. One amu is equivalent to? a) 931 MeV b) 93.1 eV c) 9.31 eV d) 931 J Answer: 931 MeV 6. Which is a fertile nuclear fuel? a) U-233 b) U-235 c) Pu-239 d) Th-232 Answer: Th-232 7. Which of ...

  Steam Turbines Questions and Answers 1. Steam turbine is _________ combustion thermal prime mover a) Internal b) External c) Both internal and external d) None of the above Answer: External 2. The efficiency of steam turbine may be improved by _________ a) Reheating of steam b) Regenerative feed heating c) Binary vapour plants d) Any of the above Answer: Any of the above 3. The action of steam in a steam turbine is _________ a) Static b) Dynamic c) Static and dynamic d) Neither static nor dynamic Answer: Dynamic 4. The reheating of steam in a turbine _________ a) Increases the workdone through the turbine b) Increases the efficiency of the turbine c) Reduces wear on the blades d) All of the above Answer: All of the above 5. The thermal efficiency of a steam turbine is _________ than that of steam engine a) Lower b) Higher c) Same d) None of the above Answer: Higher 6. Non Condensing steam turbine can also be called as _________ a) Extraction steam turbine b) Back pressure steam t...

  Boiler Objective Type Questions and answers Steam boiler Multiple Choice Questions 1. The ratio of heat actually used in producing the steam to the heat liberated in the furnace is called ________ a) Steam efficiency b) Boiler efficiency c) Evaporation capacity of a boiler d) None of the above Answer: Boiler efficiency 2. Which of the following boiler is best suited to meet the fluctuating demand of steam ________ a) Locomotive boiler b) Lancashire boiler c) Cornish boiler d) Babcock and wilcox boiler Answer: Locomotive boiler 3. Which of the following is a water tube boiler ________ a) Locomotive boiler b) Cornish boiler c) Cochran boiler d) Babcock and Wilcox boiler Answer: Babcock and Wilcox boiler 4. Water tube boilers are those in which ________ a) Flue gases pass through tubes and water around it b) Water passes through the tubes and flue gases around it c) Work is done during adiabatic expansion d) Change is enthalpy Answer: Water passes through the tubes and flue gases ar...