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# GATE Mechanical Engineering Test Paper Question Answers Online

 Test Name GATE Mechanical Engineering Test Paper Subject GATE Test Type MCQs Total Question 40 Total Marks 80 Total Time 40 Minutes Test Help For M.Tech Admissions Government Jobs Post-Graduate Engineering Admissions Engineering Jobs

Take GATE Mechanical Engineering test and boost your preparation for the upcoming GATE exams. These test papers is specially prepared for GATE mechanical engineering aspirants. We hope you will get idea about your rank in the actual preparation of GATE mechanical engineering exam by comparing your scores with other aspirants as they attempted this mock test online.

## GATE

1. For a given activity, the optimistic time, pessimistic time and the most probable estimates are 5,17 and 8 days respectively. The expected time is:

Question 1 of 40

2. Basicity of slag is expressed as:

A) Si O2%/Ca O%

B) Fe2O3%/CaO%

C) CaO% + MgO%/SiO2% + Al2O3% + P2O5%

D) None of these

Question 2 of 40

3. The dimensions of a pressure gradient in a fluid flow are:

A) ML-1T2

B) ML-3T2

C) ML-2T-2

D) M-1L-3T2

Question 3 of 40

4. The number of degrees of freedom of a five link plane mechanism with five revolute pairs as shown in figure: Question 4 of 40

5. One end of a two dimensional water tank has the shape of a quadrant of a circle of radius 2m. When the tank is full, the vertical component of the force per unit length on the corved surface will be:

Question 5 of 40

6. The COP of a refrigerator is 4. COP of the same machine when used as heat pump will be:

Question 6 of 40

7. The ratio of reaction RA and RB of the simply supported beam shown in the given figure is: Question 7 of 40

8. Ten kilograms of ice at 0oC are added to 100 kg of 40oC liquid with a specific heat of 4.0 kJ/kg. oC. Estimate the temperature of the liquid just as all the oce melts if an insulated container is used. (The heat of fusion of ice is 320 kJ/kg)

Question 8 of 40

9. Critical thickness of insulation for spheres is given by:

Question 9 of 40

10. The Miller indicates of the diagonal plane of a cube are:

Question 10 of 40

11. What part of a petrol engine would need modification if the engine is to be made to run on LPG.

Question 11 of 40

12. A body mass 10 kg moving with a velocity of 1 m/s is acted upon by a force of 50 N for two seconds. The final velocity is:

Question 12 of 40

13. Temperature near absolute zero are obtained using:

Question 13 of 40

14. For a case of a slender column of length 1 and flexural rigidity EI buit-in at base and free at the top, the Eulers critical buckling load is:

A) 4π2 EI/l2

B) 2π2 EI/l2

C) π2 EI/l2

D) π2 EI/4l2

Question 14 of 40

15. In a isothermal atmosphere the pressure:

Question 15 of 40

16. Which of the following metal has the lowest melting point?

Question 16 of 40

17. At room temperature, the dynamic and kinematic viscosity of water:

Question 17 of 40

18. A block of steel is loaded by a tangential force on its top surface while the bottom surface is held rigidly. The deformation of the block is due to: Question 18 of 40

19. The specific heats of an ideal gas depend on its:

Question 19 of 40

20. In an experiment, it is found that to Bulk modulus of a material is equal to its shear modulus. The poisson's ratio is:

Question 20 of 40

21. For a given heat flow and for the same thickness, the temperature drop across the material will be maximum for:

Question 21 of 40

22. If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will:

Question 22 of 40

23. In a rotometer as the flow rate increases, the float:

Question 23 of 40

24. Oscillating hydraulic jump occurs when the Froud's number is:

Question 24 of 40

25. The Eigen values of a square symmetrical matrix are always:

Question 25 of 40

26. For a current carrying wire of 20 mm diameter exposed to air [h = 25 w/m2k], maxm heat distribution occurs where the thickness of insulation [k = 0.5 w/mk] is:

Question 26 of 40

27. If the fringes shown by an optical flat are as shown in figure, it can be included that: Question 27 of 40

28. Which one of the following favours brittle fracture in a ductile material?

Question 28 of 40

29. In adiabatic flow with friction, the stagnation temperature along a stream line _________.

Question 29 of 40

30. Stiffness of material is measured in terms of:

Question 30 of 40

31. Silicon contains 5 x 1028 atoms per cubic metre. If it is doped with two parts per million of arsenic then the electron density at room temperature will be approximately:

A) 4 x 1023 m-3

B) 1023 m-3

C) 2 x 106 m-3

D) 106 m-3

Question 31 of 40

32. Optimum pressure ratio for maxm specific output for ideal gas turbine plant operating at initial temperature of 300 K and maxm temperature of 100 K is closer to:

Question 32 of 40

33. A carbon steel having Brinell Hardness number 100 should have ultimate tensile strength closer to:

A) 100 N/mm2

B) 200 N/mm2

C) 350 N/mm2

D) 1000 N/mm2

Question 33 of 40

34. In PERT analysis the duration of the activities is taken as:

Question 34 of 40

35. The matrix B = AT, where A is any matrix is:

Question 35 of 40

36. If a function is continuous at a point its first derivative:

Question 36 of 40

37. A propeller shaft is subjected to maxm compressive direct stress of 20 N/mm2 and maximum shear stress for 80 N/mm2 due to torque. The maximum tensile stress induced is closer to (in N/mm2):

Question 37 of 40

38. The enthalpy of steam entering a turbine in a Rankine cycle is 3200 kJ/kg K. The enthalpy after isentropic expansion is 2400 kJ/kg and the enthalpy at the end of the actual expansion is 2560 kJ/kg. The turbine efficiency is:

Question 38 of 40

39. The pressure P of an ideal gas and its mean kinetic energy E per unit volume are related by the relation:

Question 39 of 40

40. A waher 1.25 mm thick, 12 hole and an outside diameter of 25 mm is to be made from a material whose ultimate shearing strength is 3.8 tonnes/cm2. If both the punches operate simultaneously with no shear, the force need to produce a washer will be nearly:

Question 40 of 40

 Test By Subject GATE Test By Topics Mechanical Engineering
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