海船船员考试

单选题For a propeller direct driven by the engine,（）.A the thrust pads are while metal faced on both sidesB the thrust pads are while metal faced only on the forward sideC the thrust pads are while metal faced only on the after sideD intermediate shaft usual

题目
单选题
For a propeller direct driven by the engine,（）.
A

the thrust pads are while metal faced on both sides

B

the thrust pads are while metal faced only on the forward side

C

the thrust pads are while metal faced only on the after side

D

intermediate shaft usually supported by a plummer block

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相似问题和答案

第1题：

Compared to a constant pitch propeller, a controllable pitch propeller

A.more efficiently uses available engine power

B.operates at a lower efficiency at a fixed speed

C.produces the same torque at lower engine power

D.develops its rated power at a lower speed


正确答案：A

第2题：

单选题
If keep the fuel injection of main engine unchanged when ship is fouled, that will causeⅠ.The speed of main engine to be reduced Ⅱ.Ship speed to be reduced Ⅲ.The resistance torque of propeller to be increased Ⅳ.Trim at stern to increase（）
A

Ⅰ + Ⅱ

B

Ⅰ ~ Ⅲ

C

Ⅰ ~ Ⅳ

D

Ⅰ + Ⅱ + Ⅳ


正确答案： B
解析： 暂无解析

第3题：

A thrust bearing is used with a propulsion diesel engine to ____.

A.control axial movement of the crankshaft

B.transmit engine thrust to the propeller shaft

C.absorb vibrations in the propeller shafting

D.prevent propeller thrust from being transmitted to the hull


正确答案：A

第4题：

单选题
The transmission system transmitting power from the engine to the propeller is composed of shafts, bearings, and（）
A

propeller

B

flying wheel

C

main engine

D

crankshaft


正确答案： A
解析： 暂无解析

第5题：

单选题
Before starting a diesel engine that has an engine driven lube oil pump, the engineer should （）.
A

open the bypass line

B

cut in the lube oil cooler

C

pressurize the lube oil system

D

top off the expansion tank


正确答案： C
解析： 暂无解析

第6题：

单选题
For a propeller direct driven by the engine,（）.
A

the thrust pads are while metal faced on both sides

B

the thrust pads are while metal faced only on the forward side

C

the thrust pads are while metal faced only on the after side

D

intermediate shaft usually supported by a plummer block


正确答案： D
解析： 暂无解析

第7题：

单选题
While a ship with twin screw is making a turn, in order to prevent overload, the duty engineer should （）
A

reduce the fuel feeding of main engine of inner propeller

B

reduce the fuel feeding of main engine of outer propeller

C

firstly reduce the fuel of main engine of inner propeller, then reduce the fuel feeding of engine of outer propeller

D

reduce fuel feeding of two engines at the same time


正确答案： A
解析： 暂无解析

第8题：

A controllable pitch propeller on a diesel driven vessel eliminates the need for

A.friction clutches

B.disconnect clutches

C.reversing gears

D.reduction gears


正确答案：C

第9题：

单选题
A thrust bearing is used with a propulsion diesel engine to （）.
A

control axial movement of the crankshaft

B

transmit engine thrust to the propeller shaft

C

absorb vibrations in the propeller shafting

D

prevent propeller thrust from being transmitted to the hul


正确答案： D
解析： 暂无解析

第10题：

单选题
Why a gearbox is needed in a ship driven by a medium-speed diesel engine?（）
A

To reduce the main engine speed

B

To increase the main engine speed

C

To govern the main engine speed

D

To fix the propeller shaft


正确答案： A
解析： 暂无解析

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