Thermal Power Plant 1. In reaction turbine,function of the draft tube is a) To increase the flow rate b) To reduce water hammer effect c) To convert kinetic energy of water to potential energyby a gradual expansion in divergen part d) None of the above Answer: To reduce water hammer effect 2. A steam power station requires space a) Equal to diesel power station b) More than diesel power station c) More than diesel power station d) None of the above Answer: More than diesel power station 3. ____________ requires more space a) Nuclear power plant b) Hydro-electric power plant c) Tharmal power plant d) Diesel power plant Answer: Tharmal power plant 4. The major heat loss in a steam power station occurs in a) Economiser b) Spillways c) Condenser d) None of the above Answer: Condenser 5. The height of chimney in a staem power plant is governed by a) Flue gases quantity b) The draught to be produced c) Control of pollution d) Corner of power plant Answer: The draught to be produced 6. ...

  Steam Condensers Cooling Towers 1. Based on the material, with which the towers are made, cooling towers are classified into _____ a) Timber towers, Concrete towers and Alloy duct type b) Induced and forced draught type c) Induced and natural draught type d) Timber towers, Concrete towers and Steel duct type Answer: Timber towers, Concrete towers and Steel duct type 2. Humidity of air affects the cooling of water in a cooling tower. a) True b) False Answer: True 3. Which of the following phenomenon is used to cool water in a cooling tower? a) Evaporation b) Radiation c) Condensation d) Conduction Answer: Evaporation 4. The cooling of water is affected by degree of uniformity in descending water. a) True b) False Answer: True 5. What is the function of a cooling tower in a power plant? a) It cools the hot water coming back from the condenser b) It cools the hot water being supplied to the condenser c) It heats the cold water coming back from the condenser d) It heats the cold wate...

  Nuclear Power Plant 1. Cost of nuclear fuel in nuclear power plant economics is considered as __________ a) running cost b) maintenance cost c) capital cost d) development cost Answer: capital cost 2. What is the overall efficiency of nuclear power plant? a) 20 to 25% b) 25 to 30% c) 30 to 40 % d) 50 to 70 % Answer: 30 to 40 % 3. With respect to the load centre which location is suitable for stablishment of nuclear power plant? a) Load centre b) Near load centre but at reasonable distance c) Far away from load centre d) Near chemical industries Answer: Near load centre but at reasonable distance 4. Nuclear fuel in reactor lasts for __________ a) more than 5 months b) few weeks c) few days d) more than 5 years Answer: more than 5 years 5. How much coal is required to generate energy equivalent to the energy generated by 1 kg of uranium? a) 30000 tonnes of high grade coal b) 300 tonnes of high grade coal c) 10000 tonnes of high grade coal d) 3000 tonnes of high grade coal Answer: 3...

  Hydroelectric Power Plant 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. The amount of electrical energy that can be generated by a hydroelectric power plant depends upon ___________ a) Head of water b) Quantity of water c) Specific weight of water d) Efficiency of Alternator Answer: Quantity of water 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 Answer: Sedimentation 4. Which of the following statement is true about hydroelectric power plant? a) Hydroelectric power plants are multipurpose. b) Due to non-uniform flow of water frequency control in such plants is very difficult. c) Hydroelectric power plant has high running cost d) Water is used as fuel in hydroelectric power plant Ans...

  Power Plant 1. The draught produced by steel chimney as compared to that produced by brick chimney for the same height is a) less b) more c) same d) may be more or less Answer: more   2. The commercial sources of energy are a) solar, wind and biomass b) fossil fuels, hydropower and nuclear energy c) wood, animal wastes and agriculture wastes d) none of the above Answer: fossil fuels, hydropower and nuclear energy 3. The proper indication of incomplete combustion is a) high CO content in flue gases at exit b) high CO2 content in flue gases at exit c) high temperature of flue gases d) the smoking exhaust from chimney Answer: high CO content in flue gases at exit 4. Compounding of steam turbine is done for a) reducing the work done b) increasing the rotor speed c) reducing the rotor speed d) balancing the turbine Answer: reducing the rotor speed 5. The energy radiated by sun on a bright sunny day is approximately a) 700 W/m2 b) 800 W/m2 c) 1 kW/m2 d) 2 kW/m2 Answer: 1 kW/m2 6. ...

  Fuels and Combustion 1. The following is (are) used as additives for Compressed Ignition engine fuels. a) Amyl Nitrate b) Ethyl Thionitite c) Amyl Nitrite d) All of the above Answer: All of the above 2. In order to have good engine performance a) The fuel should have low boiling temperature for lower warm up period b) The percentage of volume evaporated at low temperatures should be small c) A rich mixture of air-fuel ratio of 12 to 13:1 is considered to be suitable for easy starting of the engine d) All of the above Answer: All of the above 3. The solid fuels can be used in Internal combustion engine only after their a) Solidification b) Liquefaction c) Gasification d) All of the above Answer: Gasification 4. Decomposition of higher hydrocarbon molecules into lower hydrocarbons having lower boiling temperatures is known as a) Polymerization b) Hydrogeneration c) Isomerization d) Cracking Answer: Cracking 5. The following is the desirable property (ies) of good Internal Combustio...

  Heads in a Turbine 1. Under what head is Pelton turbine operated? a) 20-50 meters b) 15-2000 meters c) 60-200 meters d) 50-500 meters Answer: 15-2000 meters 2. Head under which Kaplan turbine is operated______ a) 10-70 meters b) 70 -100 meters c) 100-200 meters d) Above 200 meters Answer: 10-70 meters 3. Total head of turbines is_______ a) Pressure head + Static head b) Kinetic head + Static head c) Static head + Pressure head d) Pressure head + Kinetic head + Static head Answer: Pressure head + Kinetic head + Static head 4. The turbine is preferred for 0 to 25 m head of water? a) Pelton wheel b) Kaplan turbine c) Tube turbine d) Francis turbine Answer: Kaplan turbine 5. The difference between gross head and friction losses is ____________ a) Net head b) Gross head c) Manometric head d) Net positive suction head Answer: Net head 6. Among the following which turbine requires more head? a) Pelton Turbine b) Kaplan Turbine c) Francis turbine d) Tube Turb...

  Turbines 1. Which principle is used in Hydraulic Turbines? a) Faraday law b) Newton’s second law c) Charles law d) Braggs law Answer: Newton’s second law 2. In hydraulic turbines, inlet energy is greater than the outlet energy. a) True b) False Answer: True 3. Hydraulic energy is converted into another form of energy by hydraulic machines. What form of energy is that? a) Mechanical Energy b) Electrical Energy c) Nuclear Energy d) Elastic Energy Answer: Mechanical Energy 4. Buckets and blades used in a turbine are used to: a) Alter the direction of water b) Switch off the turbine c) To regulate the wind speed d) To regenerate the power Answer: Alter the direction of water 5. _______________is the electric power obtained from the energy of the water. a) Roto dynamic power b) Thermal power c) Nuclear power d) Hydroelectric power Answer: Hydroelectric power 6. Which energy generated in a turbine is used to run electric power generator linked to the turbine shaft? a) Mechanical Energy...