GATE Mechanical Engineering Test Paper 1 Online Question Answers

1. Tool life of 10 hrs is obtd. When cutting with single point tool at 63 m/min. If Taylor's constant 'C'' = 257.35, tool life on doubling the velocity will be:

2. Within elastic limits:

3. Absolute pressure is:

4. The material of a rubber balloon has a poisson's ratio of 0.5. If uniform pressure is applied to blow the balloon, the volumetric strain of the material will be"

5. Maximum bending moment in a beam occurs where:

6. The moisture in a refrigeration system is removed by:

7. In steam tables, the entropy is shown as zero for:

8. The radiative transfer rate per unit area (W/m²) between two plane parallel grey surfaces (emissivity = 0.9) maintained at 400 k and 300 k is:

9. An L-shaped tube (Pilot tube) is used to measure the horizontal velocity in a stream as shown. The dynamic or velocity head is (neglect-lusser):

10. In a ₉₂U²³⁵, there are:

11. The shear center in the channel section shown in figure will be at:

12. A drilling machine is to be designed to have 'Six' spindle speeds ranging from about 110 rpm to about 650 rpm. Assuming a proper series for the layout of the speeds, the values 'second' those '6' speeds, is:

13. The percentage improvement in power capacity of a flat belt drive, when the warp angle at the driving pulley is increased from 150^o to 210^o by an idler arrangement for a friction coefficient of 0.3, is:

14. The nature of atomic bond found in diamond is:

15. If the stress strain curve for a material is as shown in figure the material is said to be:

16. Percentage of carbon in high speed steel is:

17. The difference between tensions on the tight and slack sides of a belt drive is 3000 N. If the belt speed is 15 m/s, the transmitted power in kw is:

18. The tailstock setover to turn a taper of 1 in 12 on piece of 84 length will be:

19. A symmetrical right-circular cone of wood floats in fresh water with axis vertical and the apex downmost. The axial height of the cone is 1. The submerged portion has a height h, measured upward from the apex. What would be the height of the center of buoyancy from the apex?

20. The function f(x) = e^x is

21. The crystal structure of most of the common metals is:

22. A large uniform plate containing a rivet-hole is subjected to uniform uniaxial tension of 95 MPa. The maximum stress in the plate is:

23. R-22 system when changed with R-502:

24. If young's modulus of elasticity of a material is twice its modulus of rigidity, then the Poisson's ratio the material will be:

25. When the strain in the material increases with time under sustained constant stress, the phenomenon is known as:

26. Gear sharing is a:

27. In CPM, the cost slope is determined by:

28. Force in the member AD of the pin jointed frame shown in figure.

29. Poisson's ratio for cast iron is:

30. A control volume refers to:

31. e^x is periodic, with a period of:

32. The molecules move in a solid:

33. A vertical gate 6m x 6m holds water on one side with the free surface at its top. The moment about the bottom edge of the gate of the water force will be:

34. The curve given by the equation x² + y² = 3 axy, is:

35. A bullet is fired at an angle of 45^o to the horizontal with a muzzle velocity of 981 m/s. The horizontal distance covered by the bullet from the firing site is:

36. Two gas bubbles having radii R and 2 R are in equilibrium with the surrounding liquid. The pressure inside the larger bubble should be:

37. A barn is:

38. The height of hydraulic jump is equal to:

39. Preliminary work sampling studies show that mechanic was idle 25% of the time based on a sample of 100 observations. The number of observations needed for a confidence level of 95% and an accuracy of ± 55 is:

40. Azeotrope R-501 is a mixture of: