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Question Answers 3 min read

Question Set 60

1. Why pistons are usually dished at top ? Ans: Pistons are usually hollowed at top to (i) provide greater space for…

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Question Answers 3 min read

Question Set 59

1. Maximum combustion temperature in gas turbines is of the order of 1100 to 10°C whereas same is around 00°C in…

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Question Answers 2 min read

Question Set 58

1.Which two elements in feed water can cause corrosion of tubes and plates in boiler? Ans: Acid and oxygen in feed…

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Question Answers 2 min read

Question Set 57

1. When maximum discharge is obtained in nozzle ? Ans: At the critical pressure ratio. 2. Under what condition the work done in…

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Question Answers 2 min read

Question Set 56

1. What is the difference between scavenging and supercharging ? Ans: Scavenging is process of flushing out burnt gases from engine cylinder…

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Question Answers 1 min read

Question Set 55

Question No. 1 What maybe the possible causes for the safety trip to trip at normal speed? Answer:                  1.     Excessive vibration.…

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Question Answers 3 min read

Question Set 54

Question No. 1 What is combined-cycle cogeneration? Answer: A combined cycle using a gas turbine or diesel, usually driving a…

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Question Answers 3 min read

Question Set 53

Question No. 1 What factors are responsible for turbine-blade failures? Answer: In the high pressure cylinder, the turbine blades are…

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Question Answers 4 min read

Question Set 52

Question No. 1 What are the losses in steam turbines? Answer: 1.     Residual Velocity Loss – This is equal to the absolute…

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Question Answers 6 min read

Question Set 51

Question No. 1 Usually it has been found that SCC attack takes place particularly at key-ways of shrunk-on-disc rotors of…

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Question Answers 3 min read

Question Set 50

Question No. 1 In which turbine is velocity compounding utilized? Answer: In the Curtis turbine. Question No. 2 In which…

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