Mechanical Engineering

1. Why rockets using liquid hydrogen have higher specific impulse compared to liquid hydrocarbon ? Ans: Liquid…

1. Why pistons are usually dished at top ? Ans: Pistons are usually hollowed at top to…

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

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

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

1. What is the difference between scavenging and supercharging ? Ans: Scavenging is process of flushing out…

Question No. 1 What maybe the possible causes for the safety trip to trip at…

Question No. 1 What is combined-cycle cogeneration? Answer: A combined cycle using a gas turbine…

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

Question No. 1 What are the losses in steam turbines? Answer: 1.     Residual Velocity Loss - This…