The surface condenser serves to:
| a) | Condense steam from the turbine to generate vacuum |
| b) | Condense the process gas at the surface of the compressor |
| c) | Supply condensed steam for heating the process gas |
Wrong
The correct answer is: Condense steam from the turbine to generate vacuum
In a steam turbine, the steam is expanded from a high pressure to a low pressure. The low pressure is usually created by:
| a) | The surface condenser |
| b) | The vacuum pump |
| c) | The air suction pump |
| d) | None of the above |
Wrong
The correct answer is: The surface condenser
The steam turbine is operated by regulating:
| a) | The main steam valve only |
| b) | The governor control valve only |
| c) | The main steam valve during startup and the governor control valve after the shaft speed exceeds a certain point |
The turbine speed is controlled by the main steam valve during normal operation.
| a) | True |
| b) | False |
Wrong
The correct answer is: False
A fine adjustment of the turbine shaft control is achieved by:
| a) | The main steam valve |
| b) | The surface condenser cooling rate |
| c) | The governor |
| d) | None of the above |
Wrong
The correct answer is: The governor
The speed at which the turbine operates is controlled by the governor.
| a) | True |
| b) | False |
If the water availability is scarce, the compressor shaft is more likely to be driven by __________.
| a) | A steam turbine |
| b) | A gas turbine |
| c) | A gasoline engine |
| d) | Compressed air |
Wrong
The correct answer is: A gas turbine
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