Increasing the speed of a centrifugal pump will result in an increase in its capacity in its capacityAnother means of increasing the capacity pump is to increase the（）

A、diameter of the discharge piping, with all other factors remaining the same

B、diameter of the suction piping, with all other factors remaining the same

C、width of the impeller only

D、diameter of the impeller

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更多“Increasing the speed of a centrifugal pump will result in an increase in its capacity in its capacityAnother means of increasing the capacity pump is to increase the（）”相关的问题

第1题

[单选题] When ship navigating in rough sea, the correct operation is （）

A、navigating with a low diesel engine speed B、navigating with a stable diesel engine speed C、increasing the efficiency of propeller D、increasing fuel injection

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第2题

[单选题] Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.

A、increasing the volume of intake air B、shutting off the fuel supply C、increasing the engine back pressure D、over-speeding the engine

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第3题

[单选题] Increasing the load on an engine equipped with a constant speed mechanical governor, will cause the engine speed to initially （）.

A、increase B、decrease C、fluctuate D、remain constant

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第4题

[单选题] Increasing the speed of a rotary pump above its rated speed will result in which of the following conditions to occur?（）

A、Loss of suction B、Increased clearances C、Decreased clearance D、Decreased slippage

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第5题

[] Starting a large low-speed propulsion diesel engine on diesel fuel during cold weather conditions, will be made easier by （）

A、A.increasing the quantity of starting air B、B.increasing the lube oil pressure C、C.heating the engine fuel supply D、D.heating the engine coolant

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第6题

[单选题] Increasing the speed of a centrifugal pump will result in an increase in its capacity Another means of increasing the capacity of a centrifugal pump is to increase the （）.

A、diameter of the discharge piping, with all other factors remaining the same B、diameter of the suction piping, with all other factors remaining the same C、width of the impeller only D、diameter of the impeller

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第7题

[] Recurvature of a hurricane’s track usually results in the forward speed（）.

A、A.increasing B、B.decreasing C、C.remaining the same D、D.varying during the day

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第8题

[单选题] An overspeed safety device is usually fitted to a generator engine for （） in the event of overspeed.

A、cutting power off the engine B、increasing the fuel pump setting C、braking the crankshaft D、stabilizing the ship speed

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第9题

[单选题] When ship is fouled, increasing the fuel injection for keeping the normal speed will cause the main engine （）

A、to work as overload characteristic B、overspeed C、over mechanical load only D、over thermal load only