[单选题]

When transmitted by a reduction gear, diesel engine speed is reduced and the torque available for work

A．remains the same

B．is reduced

C．is increased

D．is eliminated

参考答案与解析：

相关试题

Pitted reduction gear teeth having a dee

[单选题]Pitted reduction gear teeth having a deep blue color with evidence of overheating have been operated with _______.A．excessive speedB．improper warm-upC．extreme misalignmentD．inadequate lubrication

  • 查看答案

    • New strains of viruses are transmitted t

    [单选题]New strains of viruses are transmitted to man by______.A． a type of pigB． diseased lower animalsC． a group of migrating birdsD． a variety of means

  • 查看答案

    • The_______in the steering gear move the

    [单选题]The_______in the steering gear move the rudder to the required angleA．control equipmentB．power unitC．transmission mechanismsD．fittings and pipeline

  • 查看答案

    • （） for the camshaft gear train is taken

    [单选题]（） for the camshaft gear train is taken from a spur gear which for a six cylinder engine is at the coupling end.A . The driven gearB . The driveC . The greaseD . The lubricating oil

  • 查看答案

    • Lubrication for the main reduction gears

    [单选题]Lubrication for the main reduction gears used with diesel engines is usually supplied byA．oil from the main engine sumpB．an independent lube oil systemC．the stern bearing head tankD．the stem bearing sump tank

  • 查看答案

    • The follow£­up gear on an electro£­hydra

    [单选题]The follow-up gear on an electro-hydraulic steering gearA．relieves excessive fluid pressureB．takes the pump off stroke when the desired rudder angle is attainedC．allows for rudder movement faster than the movement of the ship&39;sD．returns the rudder

  • 查看答案

    • Gear pumps are widely used to transfer a

    [单选题]G．ear pumps are widely used to transfer any one of the following but .A．fuel oilB．lube oilC．hydraulic oilD．fresh water

  • 查看答案

    • Positive displacement, helical gear pump

    [单选题]Positive displacement, helical gear pumps are well suited for pumping oil becauseA．stuffing boxes eliminate the leakage problems usually associated with other gear pumpsB．it is not necessary to closely maintain design clearances with this pumpC．they

  • 查看答案

    • Before engaging the turning gear and tur

    [单选题]B．efore engaging the turning gear and turning the diesel engine, which of the following operation should be done except______.A．open the indicator cocksB．supply some CYL.Oil to cylinder liner wall with lubricator (only for two stoke diesel engine)C．p

  • 查看答案

    • Before starting the turning gear, （） sho

    [单选题]Before starting the turning gear, （） should be worked by hand to minimize corrosive action on the liners.A . the indicatorsB . the starting valvesC . the cylinder lubricatorsD . the turning gear

  • 查看答案