1) Which one of the following is NOT the property of a good lubricant?
Takes up the surface pressure between sliding parts.
No change in viscosity due to variation in temperature.
Becomes thicker after prolonged use.
Reduces friction between machine parts.
2) A concrete mixture ratio is given as 1: 2: 4. Which one of the following indicates these numbers?
One part cement, two parts sand, and four parts stone.
One part stone, two parts cement, and four parts sand.
One part sand, two parts stone, and four parts cement.
One part cement, two parts stone, and four parts sand.
3) The most important quality of any lubricant is
Viscosity
Specific heat
Specific gravity
Emulsification
4) Which one of the following is the best way for preparing an emulsion?
Mix soluble oil and water by pouring both simultaneously
Add water to the soluble oil
Add soluble oil to the water
None of the above
5) Which one of the following is a common method for applying cutting fluid on the tool point?
With high-pressure jet
With a brush.
With an oil can
Either ‘b’ or ‘c’.
6) When machining cast iron, the coolant used should be
Dry air
Kerosene
Machine oil
Soft water
7) Maintenance consist of the following actions
Replace of component
Repair of component
Service of component
All of the above
8) 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
(A) Downtime
(B) Break Downtime
(C) Both (A) and (B)
(D) Idle time
9) The downtime cost consists of
Loss of production
Wages paid to the workers
Reduction in sales
All of the above
10) The following is not a classification of maintenance
Timely maintenance
Corrective maintenance
Scheduled maintenance
Preventive maintenance
11) Belt of an electric motor is broken, it needs
Timely maintenance
Preventive maintenance
Scheduled maintenance
Corrective maintenance
12) Which of the following is a scheduled maintenance
Overhauling of machine
Cleaning of tank
Whitewashing of building
All of the above
13) Equipment history cards are meant to record
The way equipment behaves
The total downtime of the equipment
The rate at which different components wear off
All of the above
14) With the increase in preventive maintenance cost, breakdown maintenance cost
Increases
Decreases
Remain the same
Any of the above
15) Total productive maintenance aims at
Less idle time
Increase in productivity
Zero downtime
None of the above
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