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WorksheetsTheory Quiz (DPN51203) - Chapter 8
Total questions: 20
Worksheet time: 59mins
Maintenance consist of the following action(s):
Replace of component
Repair of component
Service of component
All of the above
The time elapsed from the point the machine fails to perform its function to the point it is repaired and brought into operating condition is known as
Down time
Break Down time
Both (A) and (B)
Idle time
The down time cost consists of
Loss of production
Wages paid to the workers
Reduction in sales
All of the above
The following is not a classification of maintenance
Corrective maintenance
Timely maintenance
Scheduled maintenance
Preventive maintenance
Belt of an electric motor is broken, it needs
Corrective maintenance
Scheduled maintenance
Preventive maintenance
Timely maintenance
The following is (are) scheduled maintenance
Overhauling of machine
Cleaning of tank
Whitewashing of building
All of the above
The ____ goes on increasing with the increase in degree of maintenance efforts.
Cost of down time
Cost of spares and maintenance
Labour and Overhead Cost
All of the above
With the increase in preventive maintenance cost, breakdown maintenance cost
Increases
Decreases
Remain same
Any of the above
A systematic approach for maintenance is
Problem – Cause – Diagnosis – Rectification
Problem– Diagnosis – Cause – Rectification
Problem – Measure – Diagnosis – Rectification
Problem– Diagnosis – Measure – Rectification
(Down time in hours / Available hours) =
Maintenance effectiveness
Frequency of breakdown
Effectiveness of maintenance planning
None of the above
(Number of breakdowns / Available machine hours) =
Maintenance effectiveness
Frequency of breakdown
Effectiveness of maintenance planning
None of the above
Total productive maintenance aims at
Less idle time
Increase in productivity
Zero down time
None of the above
State TWO (2) trouble spot for centrifugal pump that need to troubleshoot it.
Bearings
Shaft
Wear rings
Motor
There are other failure for centrifugal pump that need to take it as maintenance job. EXCEPT.
Packing leakage
Loose impellers
Shaft breakage
Electrical power failure
Plugging process line is one of the disturbance in process. There are potential materials that potentially as factor to plug a process line. EXCEPT.
Slurries
Molten polymers
Dry solid
Steam
Identify TWO (2) basic techniques are used to deal with most unplugging and cleaning jobs involving process piping and equipment.
Removing the plug by using pressure
Cleaning with a solvent, acid, or caustic solution
Physically remove it with insert a rod through pipeline
Increase the process flowrate to push the plug materials
What part of equipment is frequently used drilling (mechanical method) to unplug process line.
Heat exchanger shell
Heat exchanger tube
Steam trap
All of the above
Basically heat can help to unplug process line. Justify that statement.
It can melt the plug materials with increase the solubility.
It can decrease the solubility of the plug materials
Increase the viscosity of liquid materials
None of above
Identify TWO (2) functions of the solvent that had been used to unplug process line.
It can make process line clear
It can dissolves the plug material
It acts as a flushing medium that removes plugs
All of the above
Do you think that maintenance and troubleshooting are two important aspects to make sure plant is in the normal operation.
Yes
No
