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D. Engine instrument
Engine instrument 4
| Question | Answer |
|---|---|
| Where would a carburetor air temperature bulb be located? | In the ram air intake duct. |
| What is the fuel pressure range on float type carburetors? | 3-5 psi. |
| Where is the fuel flow indicating system generally connected within a carbureted reciprocating engine? | Between the engine fuel pump and the carburetor. |
| Name the basic components of a fuel flow system. (2) | The transmitter and the indicator. |
| What unit of measure is generally used to indicate fuel flow? | Pounds or gallons per hour. |
| Why is fuel flow monitored? | To determine fuel consumption and engine performance. |
| What does the manifold gauge indicate and how is it calibrated? | It measures the absolute pressure in the engine manifold and is calibrated in inches of mercury. |
| What directly controls manifold pressure? | Throttle opening and engine r.p.m. |
| During engine operation, where should the propeller control be set when checking the manifold pressure? | Low pitch, high r.p.m. |
| Is the aircraft electrical system required to power a cylinder head temperature gauge? | No. A thermocouple is used as the electrical source. |
| What are the possible indications of an oil pressure transmitter or indicator malfunction? | A severe or sudden drop in oil pressure while the oil temperature remains normal and the oil supply remains full. |
| What does a tachometer indicate on a reciprocating engine? | Engine r.p.m. |
| Where should the thermocouple be installed on a reciprocating engine using a single probe cylinder head temperature system? | On the hottest cylinder. |
| How are gas turbine engine tachometers calibrated? | They are calibrated in percent r.p.m |
| On a turbine engine, what is the engine pressure ratio and what does it indicate? | It is the ratio between the total inlet pressure and total turbine exhaust pressure and is used to indicate the thrust developed by the engine. |
| On a turbine engine, what does exhaust gas temperature (EGT) indicate and how is it obtained? | EGT is the average temperature of the turbine discharge gasses and is obtained by thermocouples placed near the turbine exit. |
| Can the EGT system on a turbine engine be checked without running the engine? | Yes, by checking the resistance of the thermocouples and circuits. |
| What controls both manifold pressure and r.p.m. on an engine equipped with a fixed pitch propeller? | The throttle. |
| What is shaft horsepower? | It is an indication of the torqued developed by a turboprop or turboshaft engine. |
Created by:
Justin84
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