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?
Automation - Instrumentation (Set 2)
Multiple Choice Questions
1. Which of the listed failures, occurring in an automated diesel generator system, should cause an audible alarm at the engine room control station?
2. An emergency diesel generator cooling system is equipped with an automotive type thermostat. If the thermostat bellows loses its charge, the thermostat will .
3. When an auxiliary boiler is on the line, the output of the flame scanner can be checked by placing a microammeter in series with the photoelectric cell circuit. The readings on high fire should be .
4. Diesel engine automated control systems may utilize sensing devices of dual function, with sensing ranges providing both alarm and engine shut down capability. Which of the key points listed would only require an alarm sensor?
5. The burner assembly on an automatically fired auxiliary boiler fitted with variable capacity, pressure atomizing burners, maintains steam pressure by __________.
6. If the combustion control system of an automatically fired auxiliary boiler fails to sustain burner ignition after a normal shutdown, you should check for a/an ____________.
7. A three-way thermostatic control valve regulates the diesel engine cooling water temperature by passing a portion of the water .
8. The primary function of a flame safeguard system, as used on an automatically fired auxiliary boiler, is to prevent __________.
9. All automatically fired low pressure heating boilers must have an automatic ____________.
10. The fuel supply system to an automatic auxiliary boiler, will be automatically shutdown if the boiler ___________.