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 5)

Multiple Choice Questions

1. Intercooling of a multistage air compressor provides the advantages of reducing the work of compression on the succeeding stages, and ____________.

2. When one belt of a multiple V-belt compressor drive requires replacement, all of the belts must be replaced, because ____________.

3. The safety heads of most large reciprocating compressors are held in place by ____________.

4. A squealing sound generated by an operating reciprocating air compressor would indicate ____________.

5. Which of the following is the probable cause for a motor driven, low pressure, reciprocating air compressor to repeatedly trip the circuit breaker upon starting?

6. When air compressors are arranged for automatic operation, the cylinders can be unloaded during starting and stopping by ____________.

7. If a ship service air compressor failed to unload, the ____________.

8. Aftercoolers are used with air compressors to ____________.

9. Leaking valves in a low pressure, reciprocating, air compressor can result from ____________.

10. If a ship service air compressor operating in intermittent service were failing to unload, the ____________.