1. What will be the power if the PLAN for both 2-stroke and 4-stroke engine is same?
2. What is the indicator diagram?
3. What are the purpose of taking indicator diagram?
4. What are the types of indicator diagram?
5. What is indicated power? How to calculate power?
6. Steps to take indicator diagram?
7. Purpose of Power diagram, Out-of-phase diagram, Compression diagram, Light spring diagram?
8. When indicator diagram is taken?
9. What are the necessary precaution to avoid indicator malfunction?
10. What are the steps to be taken when compression pressure is low?

Compressed Air System (Set 3)


Multiple Choice Questions


1. Intake valves installed on most reciprocating low pressure air compressors are actuated by the pressure differential between the air in the cylinder and the pressure ____________.




2. When the compressed air reservoir is placed in line with an air compressor and is used as an aftercooler, the reservoir must be ____________.




3. A knocking sound emitted from an unloaded air compressor is probably caused by ____________.




4. The cylinders and intercoolers of most low pressure air compressors are cooled by ____________.




5. An air compressor is equipped with an intercooler and an aftercooler to ____________.




6. A squealing sound occurring from within an operating reciprocating air compressor is an indication of ____________.




7. If the capacity of a reciprocating air compressor gradually drops off, the cause could be ____________.




8. If there is a sudden drop in the capacity of a reciprocating air compressor, you should check for ____________.




9. Reciprocating air compressor bearing failure may result from ____________.




10. Operating a reciprocating air compressor without an air filter will cause ____________.