Q2. Explain how sluggish action of the suction and delivery valves reduces the volumetric efficiency of an air compressor. (16)
Q2) A main air compressor interstage air-cooler has burst. Put down a logical sequence of event that could have caused this accident. Put down your analysis, point by point and complete in technical detail (16)
Q2) (a) What are the advantages and disadvantages of the single-coil type and the straight-tube type of inter-cooler for air compressor? (10)
(b) Why are the tubes and coils generally made of copper? (6)
Q6. Give reasons and remedies for the following faults in air compressors.
(a) Excessively hot discharge pipe (5)
(b) Intermediate stage relief valve lifting (5)
(c) Noticeable reduction in free air delivery (6)
Q2. a) Explain briefly about checks and calibration of a thermostat which is used to step an air compressor, when cooling water temperature goes too high? (8)
b) what is the significance of earth faults in an isolated neutral system? Explain with a suitable diagram. (8)
Username or email address *Required
Password *Required
Note: Entering wrong username in the login form will ban your IP address immediately. Entering wrong password multiple times will also ban your IP address temporarily.
Log in
Lost your password? Remember me
No account yet?
