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MAHARASHTRA STATE BOARD OF TECHNICAL EDUCATION, MUMBAI, New Satara Samuha Mumbai’s, New Satara College of Engineering Management (Polytechnic), Korti, Pandharpur, Institute. Code: 1523, Class Test 1, Class: - T.Y. Mech., Date: - 23/10/2021, Semester: - V, Time: - 2:45 PM to 3:45PM, Subject: - Power Plant Engineering (22566), Max. Marks: - 20, , Note: - 1. All questions are compulsory, 2. Tick to the Right answer in Answer sheet., 1. Which of the following is not a requirement for site selection of hydroelectric power plant??(CO 1), (a) Availability of water, (b) Large catchment area, (c) Rocky land, (d) Sedimentation, 2. 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, , (CO 1), , 3. The diesel plants are mainly used, (a) As peak load plants., (c) As stand by plants., , (CO 1), (b) As base load plants., (d) Both peak and stand by plants., , 4. The power output from a hydro-electric power plant depends on three parameters........, (a) Head, type and dam of discharge, (b) Head, discharge and efficiency of the system, (c) Efficiency of the system, type of draft tube and type of turbine used, (d) Type of dam, discharge and type of catchment area, , (CO 1), , 5. Running cost of a hydro-electric power plant is......., (CO 1), a) Equal to running cost of a steam power plant, b) Less than running cost of a steam power plant, c) More than running cost of a steam power plant, d) none of the above, 6. Location of the surge tank in a hydro-electric station is near to the........, (d). Tailrace, (b) Turbine, (c). Reservoir, (d) None of the above, 7. The function of a surge tank is........, a) To supply water at constant pressure, (b) To produce surges in the pipe line, (c) To relieve water hammer pressures in the penstock pipe, (d) None of the above, 8. Operating charges are minimum in the case of.......for same power output, a). Gas turbine plant, (b). Hydro plant, (c) Thermal plant, (d). Nuclear plant, 9. Which of the following are the advantages of a diesel power plant?, a) Diesel power plant design is simple for installation, (b) They can respond to varying loads without having any difficulty, c) There is no problem with ash handling, (d) All of the above, , (CO 1), , (CO 1), , (CO 1), , (CO 1)

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10., , Which of the following are the disadvantages of diesel power plants?, (a) High Maintenance and operating cost, (b) The working life of a diesel power plant is small due to high maintenance, (c) The plant produces too much noise, (d) All of the above, , (CO 1), , 11. The alternator or generator is used in a power plant which converts......., (CO 1), (a) Electrical Energy into Mechanical Energy, (b) Electrical energy into Solar Energy, (c) Mechanical Energy into Electrical Energy, (d) Mechanical Energy into Nuclear Energy, 12., , 13., , Which of the given boilers velocity of flue gases is greater than velocity of sound?, (a) Benson Boiler, (b). La Mont boiler, (c) Velox Boiler, (d). Schmidt-Hartmann boiler, The economizer is used in boilers to........, a). Increase thermal efficiency of boiler, (b). Economize on fuel, (c). Extract heat from the exhaust flue gases, (d). Increase flue gas temperature, , 14., , (CO 2), , (CO 2), , Thermal efficiency of well-maintained boiler will be of the order...., a) 90%, (b). 20%, (c). 78 %, (d) 55 %, , (CO 2), , 15. Water tube boilers are those in which...., (CO 2), 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, 16. Function of steam drum in La Mont boiler is…., (a) To store water, (c) To store and separate water and steam, , (CO 2), (b) To store steam, (d) None of the above, , 17. The function of super heater is......, (a) To make dry steam, (c) To makes it in to water, , (CO 2), (b) Increase the humidity, (d) No change, , 18. What type of boiler is a Benson boiler?, (a) Super critical boiler, (c) Natural circulation boiler, , (b) Fire tube boiler, (d) Over-through boiler, , 19. What is the capacity of Benson boiler?, (a) 180 tonnes/hr & above, (c) 250 tonnes/hr & above, 20. The fuel mostly used in boilers is, a) Anthracite, c) Lignite, , (CO 2), , (CO 2), (b) 150 tonnes/hr & above, (d) 300 tonnes/hr & above, (CO 2), (b) peat, (d) bituminous