Coast Guard Diesels

Card Set Information

Author:
jangofett
ID:
63329
Filename:
Coast Guard Diesels
Updated:
2011-02-01 00:50:36
Tags:
Diesels
Folders:

Description:
Diesels Bank
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  1. The exhaust gas temperature prior to entering the turbocharger, of the system shown in the illustration, is 100°-150° (37.8°-65.5°C) higher than the individual cylinder temperatures. This indicates __________.

    A. an exhaust valve leak
    B. the turbocharger is fouled
    C. a normal condition
    D. an exhaust manifold leak
    C. a normal condition
    (this multiple choice question has been scrambled)
  2. The device used to limit engine torque at various engine speeds is called a __________.
    A. speed limiting governor
    B. variable speed governor
    C. constant speed governor
    D. load limiting governor
    D. load limiting governor
    (this multiple choice question has been scrambled)
  3. Which of the following precautions should be taken prior to starting the separator shown in the illustration?

    a. Make sure the separator is properly assembled.
    b. Check for the correct oil level in the gear housing.
    c. Release the bowl brake and confirm proper valve line up.
    d. All of the above are correct.
    d. All of the above are correct.
  4. Which of the speeder springs listed is more suitable for a governor installed on an engine operating over a wide speed range?

    A. Spiral
    B. Helical
    C. Conical
    D. Cylindrical
    C. Conical
    (this multiple choice question has been scrambled)
  5. In a diesel engine, internal combustion causes the piston to be moved by __________.

    A. the simple admission of fuel and air into the combustion space only
    B. the pressure of gases developed
    C. specially designed parts connected to a shaft
    D. the concept of reciprocity
    B. the pressure of gases developed
    (this multiple choice question has been scrambled)
  6. A secondary function of diesel engine piston rings is to __________.

    A. prevent excess lubricant from reaching the combustion space
    B. prevent cylinder liner wear
    C. absorb the piston side thrust
    D. reduce friction losses in the engine
    A. prevent excess lubricant from reaching the combustion space
    (this multiple choice question has been scrambled)
  7. When a nozzle tester is being used to test a 'closed' type fuel injection nozzle, a clogged nozzle orifice will be indicated by a __________.

    A. squealing sound midway in the pump stroke
    B. popping sound when the nozzle opens
    C. chattering sound when the nozzle closes
    D. distorted spray pattern
    D. distorted spray pattern
    (this multiple choice question has been scrambled)
  8. Where engine bores exceed 230 mm, a bursting disc or flame arrester is to be fitted __________.

    A. at the supply inlet to the control air manifold for non- reversing engines
    B. on the exhaust manifold prior to the inlet of the turbochargers
    C. on all devices subject to the by-products of combustion or lubrication system vapors
    D. in way of the starting valve of each cylinder for direct reversing engines having a main starting manifold
    D. in way of the starting valve of each cylinder for direct reversing engines having a main starting manifold
    (this multiple choice question has been scrambled)
  9. Engine coolant accumulating in the diesel engine lubricating oil can result from a __________.

    A. low oil pressure
    B. high coolant pressure
    C. cracked cylinder head or liner
    D. leaking fuel injector
    C. cracked cylinder head or liner
    (this multiple choice question has been scrambled)
  10. Once the separator shown in the illustration has been started, which of the following procedures should be followed?

    a. Feel the machine for its tendency to vibrate.
    b. Check the separator by listening for mechanical sounds.
    c. Look for oil and water leaks in addition to other irregularities.
    d. All of the above procedures should be followed.
    d. All of the above procedures should be followed.

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