Page 12 (121-129)

Question 1

In order for the self-cleaning fuel oil centrifuge, shown in the illustration, to properly operate during the desludge cycles, the __________.

Answer 1

sliding bowl bottom and operating slide seal rings should be coated with a high temperature lubricating paste

Question 2

The purpose of the compensating adjustment used in a diesel engine hydraulic governor is to __________.

Answer 2

prevent governor hunting

Question 3

Part “I” of the device shown in the illustration is known as the __________.

Answer 3

intermediate disks

Question 4

When the steam pressure drops below a set value on an automatically fired auxiliary boiler, fitted with rotary cup atomizers, the combustion control system will __________.

Answer 4

increase the fuel oil control valve opening

Question 5

The main reason counterweights are added to crankshafts is to __________.

Answer 5

provide uniform loading and wear of main bearings

Question 6

An individual fuel injection pump is designed for variable beginning and constant ending of injection. For diesel engines operating a generator at constant speeds, the start of injection will __________.

Answer 6

advance as the load increases

Question 7

Diesel engines driving alternators operating in parallel must maintain a set frequency regardless of load changes. The governor characteristic used to accomplish this is known as __________.

Answer 7

compensation

Question 8

“The control system for a controllable pitch propeller can be programmed __________.

I. to produce a maximum combined propeller and engine efficiency between pitch and a given engine speed
II. for continuous operation of the engine at pre-set conditions”

Answer 8

both I and II are correct

Question 9

The diesel engine component labeled “3”, shown in the illustration is called the __________.

Answer 9

cylinder head