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Mechanical Engineering Practice Questions
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Mechanical Engineering Practice Questions
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1. Which one of thefollowing types of bearings isemployed is shafts of gearboxes of automobiles
2. For a long slender columnof uniform cross-section - theratio of critical buckling loadfor the case with both endsclamped to the case with bothends hinged is
3. For a typical sample ofambient air (at 35°C - 75%relative humidity andstandard atmosphericpressure) - the amount ofmoisture in kg per kg of dryair will be approximately?
4. For a four bar linkage intoggle position - the value ofmechanical advantage is
5. The casting process bywhich hollow castingproduced without using coreis known as
6. The tangential forcetransmitted (in newton) is
7. The manufacturingprocess in which metalchange its state from liquid tosolid.
8. A body of weight 120 Nrests on a rough horizontalsurface (m = 0.3) and is actedupon by a force applied at anangle of 30 degree to thehorizontal. The force requiredto just cause the body to slideover the surface is about
9. A 100 W electric bulb wasswitched on in a 2.5 m × 3 m× 3 m size thermally insulatedroom having a temperature of20°C. The room temperatureat the end of 24 h will be
10. It is desired to increasethe heat dissipation rate overthe surface of an electronicdevice of spherical shape of 5mm radius exposed toconvection with h = 10 w/m2Kby encasing it in a sphericalsheath of conductivity 0.04W/mk. For maximum heatflow - the diameter of thesheath should be
11. The binding material usedin cemented carbide tool is
12. Which of the followingtransducer is preferred formeasurements involvingsound?
13. A photoelectric device inwhich the resistance of themetal changes - directlyproportional to the lightstriking on it is known as
14. Find the wrongstatement among thefollowing
15. Which of the followingtransducer is preferred formeasurements involvingsound?
16. Which of the followingstatements is incorrect?
17. Which of the followingbearing is suitable forfluctuating demands?
18. The casting process bywhich hollow castingproduced without using coreis known as
19. For a typical sample ofambient air (at 35°C - 75%relative humidity andstandard atmosphericpressure) - the amount ofmoisture in kg per kg of dryair will be approximately?
20. The accuracy of a 0-“10scale reading of 10 mV may bedue to a voltage of
21. Match plate pattern is
22. Consider the followingstatements: 1. 2-D strawapplied to a thin plate in itsown plane represent the planestraw condition. 2. Underplane straw condition - thestrain in directionperpendicular to plane is zero.3. Normal and shear strawmay occur simultaneously ona plane. Which of the abovestatments is/are correct?
23. The number of strainreadings (using strain gauges)needed on a plane surface todetermine th principal strainsand their directions is
24. In the polytropic processequation - pVn = constant - if n= 1 - the process is called
25. Which one of thefollowing types of bearings isemployed is shafts of gearboxes of automobiles

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