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GATE Mechanical Engineering Test 2 Online Question Answers

Test Name GATE Mechanical Engineering Test
Subject GATE
Test Type MCQs
Total Question 40
Total Marks 80
Total Time 40 Minutes
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Graduate Aptitude Test in Engineering (GATE) is examinations administered and organized various zones across the country in India. GATE Mechanical Engineering is one out of 23 papers in official GATE examinations pattern. Contestant with Mechanical Engineering subjects these exams choice in application procedure. Our test helpful covers almost of Engineering mechanical subjects.

GATE Mechanical Engineering Test 2 Online Question Answers

GATE

1. In a DC arc welding operation, the voltage arc length characteristic was obtained as Varc = 20 + 5l where the arc length l was varied between 5 mm and 7 mm. Here Varc denotes the arc voltage in Volts. The arc current was varied from 400A to 500A. Assuming linear power source characteristic, the open circuit voltage and short circuit current for the welding operation are:

Question 1 of 40

2. A political party orders an arch for the entrance to the ground in which the annual convention is being held. The profile of the arch follows the equation y = 2x - 0.1x2 where y is the height of the arch in meters. The maximum possible height of the arch is:

Question 2 of 40

3. Air enters an adiabatic nozzle at 300 kPa, 500 K with a velocity of 10 m/s. It leaves the nozzle at 100 kpa with a velocity of 180 m/s. The inlet area is 80 cm2.The specific heat of air CP is 180 J/kg.K. The exit area of the nozzle in cm2 is:

Question 3 of 40

4. A cantilever beam of Length L is subjected to a moment M at the free end. The moment of inertia of the beam cross-section about the neutral axis is I and the Young modulus is E. The magnitude of the maximum deflection is:

26

Question 4 of 40

5. In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate:

Question 5 of 40

6. A concentrated mass m is attached at the centre of a rod of length 2L as shown in the figure. The rod is kept in a horizontal equilibrium position by a spring of stiffness k. For very small amplitude of vibration, neglecting the weights of the rod and spring, the undamped natural frequency of the system is:

14

Question 6 of 40

7. For a long slender column of uniform cross-section, the ratio of critical buckling load for the case with both ends clamped to the case with both ends hinged is:

Question 7 of 40

8. A room containing 35 kg of dry air and 0.5 g of water vapor. The total pressure and temperature of the air in the room are 100 kPa and 25oC respectively. Given that the saturation pressure for water at 25oC is 3.17kPa, the relative humidity of the air in the room is:

Question 8 of 40

9. Choose the grammatically incorrect sentence:

Question 9 of 40

10. The state of stress at a point under plane stress condition is σxx = 40 MPa; σyy = 100 MPa and τxy = 40 MPa. The radius of the Mohr's circle representing the given state of stress in MPa is:

Question 10 of 40

11. The following are the data for two crossed helical gears used for speed reduction:

Gear I:  Pitch circle diameter in the plane of rotation 80 mm and helix angle 30o

Gear II: Pitch circle diameter in the plane of rotation 120 mm and helix angle 22.5o

If the input speed is 1440 rpm, the output speed in rpm is:

Question 11 of 40

12. In a single pass rolling process using 410 mm diameter steel rollers, a strip of width 140 mm and thickness 8 mm undergoes 10% reduction of thickness. The angle of bite in radians is:

Question 12 of 40

13. An automobile plant contracted to buy shock absorbers from two suppliers X and Y. X supplies 60% and Y supplies 40% of the shock absorbers. All shock absorbers are subjected to a quality test. The ones that pass the quality test are considered reliable. Of X's shock absorbers, 96% are reliable and of Y's shock absorbers, 75% are reliable.

The probability that a randomly chosen shock absorber, which is found to be reliable, is made by Y is:

Question 13 of 40

14. Oil flows through a 200 mm diameter horizontal case iron pipe (friction factor f = 0.0225) of length 500 m. The volumetric flow rate is 0.2 m3/s. The head loss (in m) due to friction is (assume g = 9.81 m/s2).

Question 14 of 40

15. A CNC vertical milling machine has to cut a straight lot of 10 mm width and 2 mm depth by a cutter of 10 mm diameter between points (0, 0) and (100, 100) on the XY plane (dimensions in mm). The feed rate used for milling is 50 mm/min. Milling time for the slot (in seconds) is:

Question 15 of 40

16. The cost function for a product in a firm is given by 5q2, where q is the amount of production. The firm can sell the product of a market price of र 50 per unit. The number of units to be produced by the form such that the profit is maximized is:

Question 16 of 40

17. The area enclosed between the straight line y = x and the parabola y = x2 in the x - y plane is:

Question 17 of 40

18. For an opaque surface, the absorptivity (α), transitivity (τ) and reflectivity (ρ) are related by the equation:

Question 18 of 40

19. A solid disc of radius r rolls without slipping on the horizontal floor with angular velocity ω and angular acceleration α. The magnitude of acceleration of the point of contact on the disc is:

Question 19 of 40

20. Air enters an adiabatic nozzle at 300 kPa, 500 K with a velocity of 10 m/s. It leaves the nozzle at 100 kpa with a velocity of 180 m/s. The inlet area is 80 cm2. The specific heat of air Cp is 1008 J/kg.K. The exit temperature of the air is:

Question 20 of 40

21. In the mechanism given below, if the angular velocity of the eccentric circular disc is 1 rad/s, the angular velocity (rad/s) of the follower link for the instant shown in the figure is:

1

Question 21 of 40

22. Which of the following options is the closest in meaning to the word 'Mitigate'?

Question 22 of 40

23. A box contains 4 red balls and 6 black balls. Three balls are selected randomly from the box one after another without replacement. The probability that the selected set contains one red ball and two black balls is:

Question 23 of 40

24. At x = 0, the function f (x) = x3 + 1 has

Question 24 of 40

25. An incompressible fluid flows over a flat plate that with zero pressure gradient. The boundary layer thickness is 1 mm at a location where the Reynolds number is 1000. If the velocity of the fluid alone is increased by a factor of 4, then the boundary layer thickness at the same location, in mm will be:

Question 25 of 40

26. Complete the following sentence with appropriate word:

Despite the ________ the mission succeeded in its attempt to resolve the conflict.

Question 26 of 40

27. Which one of the following configurations has the highest fin effectiveness?

Question 27 of 40

28. 15

Question 28 of 40

29. 20

Question 29 of 40

30. 7

Question 30 of 40

31. Wanted temporary, part-time persons for the post of Field Interviewer to conduct personal interviews to collect and collate economic data. Requirements: High-School pass, must be available for Day, Evening and Saturday work. Transportation paid, expenses reimbursed.

Which one of the following is the best inference for the above advertisement?

Question 31 of 40

32. During normalizing process of steel, the specimen is heated:

Question 32 of 40

33. An ideal gas of mass m and temperature T1 undergoes a reversible isothermal process from an initial pressure P1 to final pressure P2. The heat loss during the process is Q. The entropy change ∆S of the gas is:

2

Question 33 of 40

34. Given the sequence of terms, AD CG FK JP, the next term is:

Question 34 of 40

35. Consider the function f (x) = |x| in the interval - 1 ≤ x ≤ 1. At the point x = 0, f (x) is:

Question 35 of 40

36. The velocity triangles at the inlet and exit of the rotor of a turbo machine are shown. V denotes the absolutely velocity of the fluid. W denotes the relative velocity of the fluid, and U denotes the blade velocity. Subscripts 1 and 2 refer to inlet and outlet respectively. If V2 = W1 and V1 = W2, then the degree of reaction is:

3

Question 36 of 40

37. Choose the most appropriate alternative from the options given below to complete the following sentence:

Suresh's dog is the one _________ was hurt in the stampede.

Question 37 of 40

38. A solid steel cube constrained on all six faces is heated so that the temperature rises uniformly by ∆T. If the thermal coefficient of material is α, Young's modules is E and the Poisson's ratio is v, the thermal stress developed in the cube due to heating is:

Question 38 of 40

39. Which one of the following is not a decision taken during the aggregate production planning stage?

Question 39 of 40

India

40. Which of the following assertions are correct?

P: Adding 7 to each entry in a list adds 7 to the mean of the list.

Q: Adding 7 to each entry in a list adds 7 to the standard deviation of the list

R: Doubling each entry in a list doubles the mean of he list

S: Doubling each entry in a list leaves the standard deviation of the list unchanged

Question 40 of 40


 

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