Condensers and Cooling Towers Multiple Choice Questions with Answers Condensers Multiple Choice Questions 1. The function of a condenser in a thermal power plant is__________. a) to act as a reservoir to receive steam for the turbine b) to condense steam into condensate to be reused again c) to create a vacuum d) all of these Answer: all of these 2. A condenser condenses the steam coming out from___________. a) Boiler b) Turbine c) Economiser d) Super heater. Answer: Turbine 3. Spray ponds are used to cool the warm water coming from the condenser in ________ a) Large power plants b) Small power plants c)  Medium power plants d) Both medium and large power plants. Answer: Small power plants 4. Water used in the steam plant is used for cooling in_______________. a) Condenser b) Turbine only c) Boiler tube d) Boiler tubes and turbines Answer: Condenser 5. What is use of the air pumps in the condenser? a) Remove water b) Air leaking in the condenser and to maintain the vacuum. c) Maintai

  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) 28.73 d)

  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 turbin

Sensors Definition of sensor   A sensor is a device that detects and responds to some type of input from the physical environment. The specific input could be light, heat, motion, moisture, pressure, or any one of a great number of other environmental phenomena.  A sensor is a device that detects and responds to some type of input from the physical environment. The specific input could be light, heat, motion, moisture, pressure, or any one of a great number of other environmental phenomena. The output is generally a signal that is converted to human-readable display at the sensor location or transmitted electronically over a network for reading or further processing.  What is a Sensor? There are numerous definitions as to what a sensor is but I would like to define a Sensor as an input device which provides an output (signal) with respect to a specific physical quantity (input). The term “input device” in the definition of a Sensor means that it is part of a bigger system which p

  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 Answer: Sed