Home » , » Questions on Bearings:

Questions on Bearings:

-->

Questions on Bearings:

Precision engine bearing inserts are manufactured with a small portion of the bearing ends extending beyond the  bearing housing or caps. The installation process of these bearings requires sufficient ________./crush
Bearing wear on a split sleeve type bearing is measured with a ____________./ball anvil micrometer
The amount of wear on a split precision main bearing can be accurately determined by comparing the data from a previous reading to the present readings taken with a ____________./ball anvil outside micrometer
The amount of wear on a split, fixed sleeve-type, main  diesel bearing can be accurately determined with a ________./ball anvil outside micrometer
Which of the bearings listed are most widely used for the main and connecting rod bearings of a diesel engine?/Precision insert
Which of the following methods is normally used to lubricate bearings in a small high-speed diesel engine?/Pressure lubrication
Which of the following is an example of a solid bearing?/Piston pin bushing
In a diesel engine, the main bearings are used between the _____________./crankshaft and the engine block
Which of the listed bearing installations is subjected to swinging motion?/Wrist pin bearings
Bearing "crush" as applied to diesel engine main bearings, will result in _____________.  ( the common word used is "nip" )/positive seating of the bearings in their housings
A main propulsion diesel engine crankshaft bearing lacking sufficient "crush", will _____________./tend to rotate with the journal
Which of the bearings listed is most widely used for main and connecting rod bearings of modern diesel engines?/Precision insert
Diesel engine main and connecting rod precision bearings are made in halves. Each half exceeds one-half the   bearing circumference by a small amount. The small   amount is termed _____________./crush
The proper location for journal bearing oil grooves is  _______________./as a side relief where the two shells meet
A characteristic of a bearing material which permits small dirt particles to become embedded in it's surface is  ________________./desirable, as it will prevent damage to the journal surface
Which bearing half will receive the greatest load in a  two-stroke/cycle diesel engine?/Lower half of the piston pin bearing in the connecting rod.
Which of the statements represents a characteristic of the thrust collar in a Kingsbury thrust bearing?/It turns with the shaft and the pivot shoes do not rotate.
The leveling plates in a Kingsbury thrust bearing are held in position by _____________./dowels and pins
The bearings used to support the crankshaft are generally called __________./main bearings
The nuts of main bearings, connecting rod bolts and all  other moving parts are to be secured by ________./split pins or other effective means
On most modern diesel engines, the main and connecting rod bearings receive their lubricating oil by ____________./pressure feed
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 ____________./bearing pressure in a four-stroke/cycle single acting diesel engine is continually reversed
Lubricating oil is supplied to the crankpin bearings in a marine diesel engine by _____________./internal crankshaft passages
On a medium-speed main propulsion diesel engine, the  crankpin or crank journal bearings receive lubricating oil from _____________./drilled passages in the crankshaft
Lubricating oil systems for diesel engine journal bearings are usually lubricated by which of the following types of lubricating oil systems?/Pressure
Wristpin bearings are difficult to lubricate because of  their oscillating motion and _____________./their position in the lubrication system
While inspecting the main bearings on a diesel engine you find impregnated dirt and scratches in the bearing surface. You would, therefore, suspect that ___________./the lube oil was not being properly filtered
The most crucial time for any bearing with regards to  lubrication is _____________./during starting
To guarantee that a reduction gear bearing is receiving proper oil supply, you should check the ___________./bearing lube oil temperature
The load is always placed on the lower half of the main  bearings in a/an ____________./two-stroke/cycle engine
Which term describes piston pins having bearing surfaces in both the piston bosses and connecting rod eye?/Full floating
A thrust bearing is used with a propulsion diesel engine to _____________./control axial movement of the crankshaft
What is the function of the main thrust bearing?/Transmits propeller thrust to the hull.
Kingsbury thrust bearings are lubricated by _____________./flooding the thrust bearing assembly with oil
Which of the bearing types listed is most commonly used in smaller vessel main propulsion reduction gears as thrust bearings?/Tapered roller bearings
In a Kingsbury thrust bearing, the thrust shoes are _______./pivoted, and the thrust collar turns with the shaft
Which of the listed components will ensure equal continuous pressure on the thrust shoes of a Kingsbury thrust bearing?/Leveling plates
The highest loads applied to the diesel engine crankshaft main bearings are ____________./firing loads
A well-lubricated bearing surface always appears __________./highly polished
In some modern large diesel engines, which of the followingis used as the support for the main bearings?/Bedplate
An acceptable means of tightening connecting rod and mainbearing cap bolts is to measure the ___________.  I. torque applied to each nut and bolt assembly  II. stretch of each nut before and after tightening/I only
Kingsbury thrust bearings are lubricated by _____________.                  I. a flooded housing  II. oil spray on collar and shoes/I only
Which of the listed bearing types is an example of a solid bearing?/Piston wrist pin bushing
The upper leveling plates in a Kingsbury thrust bearing are held in place by _____________./pins through the base ring
Which of the following statements represents the proper  order of thrust transmission when a Kingsbury thrust bearing is used with diesel propulsion?/Propeller shaft, thrust collar, thrust shoes, and thrust bearing housing
To guarantee that a reduction gear bearing is receiving proper oil supply, you should check the ___________./bearing lube oil temperature
The thickness of the oil film to be developed in a diesel engine main bearing, depends upon the _____________./all of the above
Proper lubrication of the main bearings is more easily  obtained in a single acting, four-stroke/cycle diesel engine than in a two-stroke/cycle diesel engine because __________./the direction of pressure on the journals in four-stroke engines is continuously reversing, whereas in two-stroke engines it is constant
To measure bearing clearances, a special small diameter  plastic rod (plasti-gage) is placed between the crankshaft journal and the connecting rod bearing shell. The actual reading is obtained by _____________./using the paper or cardboard gauge printed on the plastic rod package to measure the flattened width
To determine the main bearing clearance of a propulsion  diesel engine, you should measure the main bearing shell using a ball anvil outside micrometer and measure the  crankshaft journal using a/an _____________./outside micrometer
On a large low-speed main propulsion diesel engine, lower main bearing wear is usually measured by using a/an ______./bridge gage
Which of the devices is commonly used in measuring the  clearances between the main engine bearings and the   crankshaft?/Plasti-gage
To determine the main bearing clearances in a diesel engine, you should use _____________./plasti-gage
The insertion of shims between the foot of a marine type connecting rod and a bearing box would result in __________./increased compression ratio
Which of the following operating conditions can occur when shims are removed from the joint between the foot of a  marine type diesel engine connecting rod and the bearing box?/Decreased compression ratio
Worn main bearings will cause the compression ratio of an auxiliary diesel engine to _____________./decrease
An acceptable method of measuring for the correct rotational force applied to the connecting rod and main bearing bolts, is to use a _____________./torque wrench
Abnormal crankpin bearing and piston skirt surface wear  indicate _____________./incorrect connecting rod alignment
Small cracks in the crankshaft bearing surface of a diesel engine are an indication of _____________./fatigue failure
Which of the bearings listed below is most widely used for the main and connecting rod bearings of a modern high-speed diesel engine?/Precision insert
Which of the bearing types listed is commonly used for main bearings in small internal combustion engines?/Replaceable precision-type
Bearing clearances in small high-speed diesel engines should be measured with _____________./plasti-gage
Which type of wrist pin uses bearings in the piston bosses, but is fixed to the small end of the connecting rod?/Semi-floating
Worn main bearings in a diesel engine can result in _______./decreased compression pressure
You are inspecting the lower main precision bearings on a diesel engine. You observe that about half the thin babbitt linings are of a milky white color. This condition is caused by _____________./water contamination of the lube oil
Bearing clearances in small high-speed diesel engines should be measured using _____________./plasti-gage
A bronze bearing liner with a lead-tin flashing has a  milky-white color over most of its surface and some areas of exposed bronze. The white coloring indicates _____________./water contamination of the lube oil system
Write to me at marinenotes4u@gmail.com,283928@gmail.com.::MK::.
-->
Facebook:Marine NotesTwitter:ACMWCTRss:ACMWCT
Marine Notes - MMD Exams India and Baiscs
URL: HTML link code: BB (forum) link code:
© Marine Notes - MMD Exams India and Basics (M&K Groups Ltd)

2 comments:

raj shahani said...

Hi i am raj shahani we are services provider for Crankshaft Marine Engine .For example Portable Crankshaft Grinder,Crank shaft Marine Engine,Crank shaft Second Hand,Crankshaft Marine Engine etc.
Crankshaft Marine Engine

Perfect Sales said...

better blog more information our sites
spare parts supplier

Facebook Marine Notes
Twitter Marine Notes
Rss Marine Notes

Followers

Follow by Email

Archive