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.Management Sciences
Category: Mechanical Engineering Mcqs
A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will_________________?
A. increase
B. decrease
C. remain same
D. increase/decrease depending on depth of immersion
E. unpredictable
In automobiles the power is transmitted from gear box to differential through _________________?
A. bevel gear
B. universal joint
C. Hooke’s joint
D. Knuckle joint
E. Oldham’s coupling
If D1 and D2 be the diameters of driver and driven pulleys, then belt speed is proportional to__________________?
A. D1/D2
B. D2/D1
C. D1-D2.
D. D1
E. D1+D2
The maximum temperature in the I.C. engine cylinder is of the order of ________________?
A. 500- 1000°C
B. 1000- 1500°C
C. 1500-2000°C
D. 2000-2500°C
E. 2500-3000°C
For standard coarse threads of nut, the threads will be as strong in failure by shear as the bolt in tension, if the height of nut (h) is approximately________________?
A. 0.4 times
B. 0.6 times
C. 0.7 times
D. 0.8 times
E. 0.9 times the normal diameter of bolt
The artificial activity; which indicates that an activity following it cannot be started unless, the preceding activity is complete, is known as_________________?
A. event
B. free float
C. artificial
D. constraint
E. dummy
Exhaust pipes of engines are covered with insulating marterial in order to_________________?
A. keep the exhaust pipes warm
B. reduce formation of condenstae
C. reduce heat transfer to the engine room
D. increase engine efficiency
E. conserve heat
If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to___________________?
A. 0.2
B. 0.25
C. 0.50
D. 0.6
E. 0.75
Which of the following is not correct procedure to increase the fatigue limit_______________?
A. cold working
B. shot peening
C. surface decarburisation
D. under-stressing
E. all of the above
When two springs are in series (having stiffness K), the equivalent stiffness will be________________?
A. K
B. K/2
C. 2K
D. KIA
E. UK
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