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GATE Mechanical Engineering Online Test 4 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 considered to be the standard examination conducted not only for post graduation admissions but also to open the gates for lucrative opportunities in several public sector enterprises and research organizations. GATE, for long, has been known to test the Engineering basics in a smart way. GATE Mechanical Engineering papers in official GATE exam syllabus. Aspirants with Mechanical Engineering background can option for these exams in application procedure. Our test covers almost of Engineering mechanical subjects.

GATE Mechanical Engineering Online Test 4 Question Answers


1. Which of the following options is the closest in meaning to the word 'Circuitous'.

Question 1 of 40

2. The question below consists of a pair of related words followed by four pairs of words. Select the pair that best expresses the relation in the original pair.

Unemployed: Worker

Question 2 of 40

3. A hydraulic turbine develops 1000 kW power for a head of 40 m. If the head is reduced to 20 m, the power developed (in kW) is:

Question 3 of 40

4. Tooth interference in an external involute spurgear pair can be reduced by:

Question 4 of 40

5. For Tool A, Taylor's tool life exponent (n) is 0.45 and constant (K) is 90. Similarly for tool B, n = 0.3 and K = 60. The cutting speed (in m/min) above which tool A will have a higher tool life than tool B is:

Question 5 of 40

6. A bracket (shown in figure) is rigidly mounted on wall using four rivets. Each rivet is 6 mm in diameter and has an effective length of 12 mm.

14Direct Shear stress (in MPa) in the most heavily loaded rivet is:

Question 6 of 40

7. A lightly loaded ful journal bearing has journal diameter of 50 mm, bush bore of 50.05 mm and bush length of 20 mm. If rotational speed of journal is 1200 rom and average viscosity of liquid lubricant is 0.03 Pa s, the power loss (in W) will be:

Question 7 of 40

8. The state of plain-stress at a point is given by σx = - 200 MPa, σy = 100 MPa and τxy = 100 MPa. The maximum shear stress (in MPa) is:

Question 8 of 40

9. Choose the most appropriate word from the options given below to complete the following sentence:

His rather casual remarks on politics _________ his lack of seriousness about the subject.

Question 9 of 40

10. The maximum velocity of a one-dimensional incompressible fully developed viscous flow, between two fixed parallel plates, is 6 ms-1. The mean velocity (in ms-1) of the flow is:

Question 10 of 40

11. Consider the following two processes:

  1. A heat source at 1200 K loses 2500 kJ of heat to sink at 800 K
  2. A heat source at 800 K loses 2000 kJof heat to sink at 500 K

Which of the following statements is true?

Question 11 of 40

12. A phenomenon is modeled using n dimensional variables with k primary dimensions. The number of non-dimensional variables is:

Question 12 of 40

13. Mobility of a statically indeterminate structure is:

Question 13 of 40

14. 25 persons are in a room. 15 of them play hockey, 17 of them play football and 10 of them play both hockey and football. Then the number of persons playing neither hockey nor football is:

Question 14 of 40

15. The project activities, precedence relationships and durations are described in table. The critical path of the project is:


Question 15 of 40

16. Which of the following statements is INCORRECT?

Question 16 of 40

17. A box contains 2 washers, 3 nuts and 4 bolts. Items are drawn from the box at random one at a time without replacement. The probability of drawing 2 washers first followed by 3 nuts and subsequently the 4 bolts is:

Question 17 of 40

18. A tapper hole is inspected using a CMM, with a probe of 2 mm diameter. At a height, Z = 10 mm from the bottom, 5 points are touched and a diameter of circle (not compensated for probe size) is obtained as 20 mm. Similarly, a 40 mm diameter is obtained at a height Z = 40 m. The smaller diameter (in mm) of hole at Z = 0 is


Question 18 of 40

19. The material property which depends only on the basic crystal structure is:

Question 19 of 40

20. Simplex method of solving linear programming problem uses:

Question 20 of 40

21. There are two points P and Q on a planar rigid body. The relative velocity between the two points:

Question 21 of 40

22. One kilogram of water at room temperature is brought into contact with a high temperature thermal reservoir. The entropy change of the universe is:

Question 22 of 40

23. 5 skilled workers can built a wall in 20 days; 8 semi-skilled workers can build a wall in 15 days; 10 unskilled workers can build a wall in 30 days. If a team has 2 skilled, 6 semi-skilled and 5 unskilled workers, how long will it take to build the wall?

Question 23 of 40

24. In a CNC program block, N002 G02 G91 X40 Z40..., G02 and G91 refer to:

Question 24 of 40

25. A mass m attached to a spring is subjected to a harmonic force as shown in figure. The amplitude of the forced motion is observed to be 50 mm. The value of m (in kg) is:


Question 25 of 40

26. A mono-atomic ideal gas (γ = 1.67, molecular weight = 40) is compressed adiabatically from 0.1 MPA, 300 K to 0.2 MPa. The universal gas constant is 8.314 kJ kmol-1 K-1. The work of compression of the gas (in kJ kg-1) is:

Question 26 of 40

27. For the stability of a floating body, under the influence of gravity alone, which of the following is TRUE?

Question 27 of 40

28. Vehicle manufacturing assembly line is an example of:

Question 28 of 40

29. Two pipes of inner diameter 100 mm and outer diameter 110 mm each are joined by flash-butt welding using 30 V power supply. At the interface, 1 mm of material melts from each pipe which has a resistance of 42.4 Ω. If the unit melt energy is 64.4 MJ m-3, then time required for welding (in s) is:

Question 29 of 40

30. A turbo-charged four-stroke direct injection diesel engine has a displacement volume of 0.0259 m3 (25.9 litres). The engine has an output of 950 kW at 2200 rpm. The mean effective pressure (in MPa) is closest to:

Question 30 of 40

31. Hari (H), Gita (G), Irfan (I) and Saira (S) are siblings. All were born on 1st January. The age difference between any two successive siblings is less than 3 years. Given the following facts:

  1. Hari's age + Gita's age > Irfan's age + Saira's age
  2. The age difference between Gita and Saira is 1 year. However Gita is not the oldest and Saira is not the youngest.
  3. There are no twins.

In what order were they born (oldest first)?

Question 31 of 40

32. The demand and forecast for February are 12000 and 10275, respectively. Using single exponential smoothening method (smoothening coefficient = 0.25), forecast for the month of March is:

Question 32 of 40

33. Torque exerted on a flywheel over a cycle is listed in the table. Flywheel energy (in J per unit cycle) using Simpson's rule is:


Question 33 of 40

34. Modern warfare has changed from large scale crashes of armies to suppression of civilian population. Chemical agents that do their work silently appear to be suited to such warfare; and regretfully, there exit people in military establishments who think that chemical agents are useful tools for their cause.

Which of the following statement best sums up the meaning of the above passage.

Question 34 of 40

35. A moist air sample has dry bulb temperature of 30oC and the specific humidity of 11.5 g water wapour per kg dry air. Assume molecular weight of air as 28.93. If the saturation vapor pressure of water at 30oC is 4.24 kPa and the total pressure in 90 kPa, then the relative (in %) of air sample is:

Question 35 of 40

36. In a gating system, the ratio 1 : 2 : 4 represents:

Question 36 of 40

37. A smooth pipe of diameter 200 mm carries water. The pressure in the pipe at section S1 (elevation: 10 m) is 50 kPa. At section S2 (elevation: 12 m) the pressure is 20 kPa and velocity is 2 ms-1. Density of water is 1000 kgm-3 and acceleration due to gravity is 9.8 ms-2. Which of the following is TRUE?

Question 37 of 40

38. Given digits 2, 2, 3, 3, 3, 4, 4, 4, 4 how many distinct 4 digit numbers greater than 3000 can be formed?

Question 38 of 40

39. Annual demand for window frames is 10000. Each frame costs (Rs. 200 and ordering cost is Rs. 300 per order. Inventory holding cost is Rs. 40 per frame per year. The supplier is willing to offer 2% discount it the order quantity is 1000 or more, and 4% if order quantity is 2000 or more. If the total cost is to be minimized, the retailer should:

Question 39 of 40

40. Little's law is a relationship between:

Question 40 of 40


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