單項選擇題Which of the general advantages listed does the electrical pyrometer have over the mechanical pyrometer?()

A.When heated, it will move proportional to the amount the metal has lengthened or expanded
B.The pointer associated with the pyrometer scale can be made to also measure engine RPM
C.It can be utilized in exhaust manifolds and heat exchangers interchangeably
D.It can indicate temperature at a distant point from the source heat


您可能感興趣的試卷

你可能感興趣的試題

1.單項選擇題The loss of the diesel engine cylinder air charge through leaky valves, piston rings, worn or scored liners, would be indicated by which of the following sets of conditions?()

A.Low compression pressure and high exhaust temperature
B.Low firing pressure and high exhaust temperature
C.Low compression pressure and low exhaust temperature
D.Low firing pressure and low exhaust temperature

2.單項選擇題Excessive valve lash in an auxiliary diesel engine will cause the valves to open()

A.later and close sooner
B.sooner and close later
C.sooner and close sooner
D.later and close later

3.單項選擇題Pyrometers commonly found on diesel engine exhaust systems, consist of()

A.pyrostats and a voltmeter
B.a gas-filled bellows, a tube and a pressure gauge
C.thermocouples and a voltmeter
D.ammeters and thermocouples

4.單項選擇題Low compression in a diesel engine can be caused by ()

A.clogged coolant passages
B.a leaking cylinder head gasket
C.low fuel oil pressure
D.worn or broken cylinder liner sealing rings

5.單項選擇題In a four-stroke cycle diesel engine the intake valves open ()

A.before TDC and close after BDC
B.after TDC and close after BDC
C.before TDC and close before BDC
D.after TDC and close before BDC

最新試題

Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?()

題型:單項選擇題

As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()

題型:單項選擇題

Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the()

題型:單項選擇題

When does auxiliary burner of incinerator put into operation? ()Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish

題型:單項選擇題

The additional mark ()in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.

題型:單項選擇題

“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a()

題型:單項選擇題

To shut down a diesel engine after it exceeds the set maximum speed,which type of device listed should be used?()

題型:單項選擇題

During the diesel engine running, the water level of F.W expansion tank should normally kept in the () level of glass tube.

題型:單項選擇題

Under MARPOL Code the ship to which it applies has to carry ()

題型:單項選擇題

By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a()

題型:單項選擇題