Welcome to your MEO Class 4 - MOTOR Test 4
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1
Sacrificial zinc anodes are used on the saltwater side of diesel engine heat exchangers to _____________.
2
It is desirable for an auxiliary boiler safety valve to pop open and reseat quickly to __________.
3
An auxiliary engine under load continuously fluctuates even with a steady load. The fault you diagnose could be owing to
4
Excessive vibration of an automatically fired auxiliary boiler can be caused by _____________.
5
The purpose of a temperature sensing device installed in the stack of a small automatically fired auxiliary steam boiler is to secure the oil burner _______________.
6
The main advantage of unit injectors over other fuel injection systems is _____________.
7
If the combustion control system of an automatically fired auxiliary boiler fails to restart from the normal shutdown mode, you should check for ______________.
8
Friction developing between the moving parts of a governor, governor linkage and control valve will cause the governor to _________.
9
When a waste heat boiler is installed in the exhaust of a main propulsion diesel engine, the exhaust gas bypass would be used ____________.
10
Cooling water pumps driven by direct reversing diesel engines are usually of the straight impeller vane type pump with a concentric housing to ____________.
11
Which of the fuel injection systems listed uses a spring loaded differential spray needle valve and an individual pump for each cylinder?
12
A dirty atomizer sprayer plate in the burner of an auxiliary boiler, would be indicated by
13
The interior of some diesel engine saltwater heat exchangers are protected from corrosion by the use of __________.
14
On a medium-speed main propulsion diesel engine, the crankpin or crank journal bearings receive lubricating oil from _____________.
15
Lubrication for the main reduction gears used with diesel engines is usually supplied by __
16
The lube oil cooler is located after the lube oil filter in order for _____________.
17
When taking tank soundings on a ship, coating the tape with chalk helps to ______________.
18
Proper lubrication of the main bearings is more easily obtained in a single acting four-stroke/cycle diesel engine than in a single acting two-stroke/cycle diesel engine because ____________.
19
Increasing the valve clearance between a valve stem and rocker arm, will result in the valve _____________.
20
To minimize corrosion, fuel oil strainer disks, spacers and scraper blades are made of _____________.
21
What is to be installed on an internal combustion engine if its cylinder bore exceeds 200mm?
22
In a diesel engine, maximum lube oil system pressure is normally controlled by _____________.
23
Internal combustion engine crankcase vent outlets must be equipped with ______.
24
Which of the following actions should normally be taken during each watch when the auxiliary boiler is in operation?
25
The crankcases of many diesel engines are kept under a slight vacuum to _____________.
26
The growth rate of microbiological organisms as found in some fuel supplies will __________.
27
The amount of chloride content in the water of an auxiliary boiler can be reduced by ____________.
28
Fuel injection pumps using the port and helix metering principle requires the use of a ___________.
29
Cooling the intake air supplied to a diesel engine will _____________.
30
While an auxiliary boiler is operating at design load, which of the following actions will occur if the automatic combustion control system detects a steam pressure drop?
31
In any diesel engine closed freshwater cooling system, the lowest pressure exists at the _____________.
32
Which of the following statements describes the function of an alarm enunciator on an engine room alarm panel?
33
If the valve tappets in a diesel engine are set at greater clearances than those specified by the engine manufacturer, those valves will _____________.
34
Regarding a Diesel engine crankcase, the general arrangement and installation should preclude(make it impossible) the possibility of ________.
35
Factors of lower limit of thrust by clearance
36
The rate of cylinder lubricating oil metered to each cylinder of a large, low-speed, main propulsion diesel engine is ______________.
37
The main requirements which a fuel injection system must fulfill are ? Select the false statement
38
use of synthetic polymer treatment limited to low pr boiler, why?
39
Which of the following statements describes the function of an expansion tank in a diesel engine cooling system?
40
Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?
41
When there is a flame failure in an automatically fired auxiliary boiler, the ____________.
42
Excessive leakage and premature failure of valve packing is a result of ____________.
43
What preventative maintenance should be done frequently to diesel engine starting air receivers?
44
Within the cycle of a forced circulation auxiliary water-tube boiler, part of the water flashes into steam, and the remaining hot water is _________________.
45
The highest pressure in any closed diesel engine freshwater cooling system is at the __
46
With the help of explanatory sketches briefly state the lubrication system for a large 2 stroke slow speed marine diesel engine for the following.
47
The fuel supply system to an automatic auxiliary boiler, will be automatically shutdown if the boiler ______________.
48
A very sudden rise in pressure during combustion accompanied by knocking of the unit or detonation usually occurs
49
Ignition failure in an automatically controlled auxiliary boiler could be caused by _____________.
50
A unit type fuel injector is used on a diesel engine to _____________.
