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# Model Question (with multiple choice answers) 2018

This article tests your studies, that how much you have understood the subjects. We post the similar article on thermal engineering if you want to improve your thermal engineering subject you’ve to read that article to.

This test contains 50 questions with 4 answers you have to choose the right answers and count your score. After completing the questions look at the answers and verify with yours. You can find the answers at last.

So let’s get started.

1. In EDM process the workpiece is connected to
1. Cathode
2. Anode
3. Earth
4. None

2. Which one of the following cannot be used as tool material in ECM?
1. Aluminium
2. Platinum
3. Graphite
4. Chromium

3. For machining very small holes and cutting complex profiles in thin and hard materials like ceramics, ………. is used.
1. LBM
2. ECM
3. EDM
4. USM

4. In sand moulding cope is the
1. Uppermost part of the flask
2. Bottommost part of the flask
3. Middle part of the flask
4. The innermost part of the flask

5. “The heat and mechanical work are mutually convertible” is according to
1. Zeroth law of thermodynamics
2. First law of thermodynamics
3. Second law of thermodynamics
4. Gay-lussacs law

6. The absolute pressure of a given mass of a perfect gas varies inversely as it volume when the temperature remains constant is the statement of
1. Boyle’s law
2. Charle’s law
3. Joule’s law
4. Gay-lussacs law

7. The ratio of specific heat at constant pressure Cp and specific heat at constant volume Cv is
1. Equal to one
2. Less than one
3. More than one
4. Equal to one

8. During compression process the internal energy
1. Increases
2. remaining constant
3. Decreases
4. None of these

9. ………….. is an example of single slider crank chain
1. Elliptical trammel
2. Scotch-yoke mechanism
3. Pendulum pump
4. Oldham’s coupling

10.  Combination of kinematic pairs joined in such way that no link moves relative to each other is known as
1. Mechanism
2. Structure
3. Kinematic chain
4. Inversion

11. The size of the gear is generally specified by
1. Pressure angle
2. Circular pitch
3. Diametral pitch
4. Pitch circle diameter

12.  A centrifugal tension in belts
1. Increases power transmission
2. Decreases power transmission
3. First increases and then decreases power transmission
4. Have no effect on power transmission

13. The thermal stress induced in a body depends upon
1. Modulus of elasticity
2. Co-efficient of expansion
3. Change in temperature
4. All the above

14. When the Poisson’s ratio is 1/4, the ratio of Bulk modulus (K) to Young’s modulus (E) is
1. 1/3
2. 2/3
3. 3/2
4. 1/2

15. The ratio of lateral strain to linear is called as
1. Poisson’s ratio
2. Young’s modulus
3. Rigidity modulus
4. Bulk modulus

16. Elongation of a circular rod of dia D, length L subjected to an axial pull of P is given by
1. dl = PL/4 Π D²E
2. dl = PL/2 Π D²E
3. dl = 4PL/Π D²E
4. dl = 2PL/Π D²E

17. The nature of thermal stress induced due to the prevention of expansion of the rod is
1. Tensile stress
2. Compressive stress
3. Shear stress
4. No stress

18. Bessemer converter is used for manufacturing
1. Pig iron
2. Cast iron
3. Steel
4. Wrought iron

19. The pig iron contains about ……….. of carbon.
1. 4 to 5%
2. 0.2 to 0.4%
3. 0.6 to 1.1%
4. 1 to 2%

20.  Which of the following type of steel is used for making chisels, hammers, saws and woodworking tools?
1. Mild steel
2. Medium carbon steel
3. High carbon steel
4. Stainless steel

21. The metal having higher specific gravity among the following is
1. ALUMINIUM
2. Copper
3. Zinc

22.  Which one of the following metal is used for galvanizing?
2. Zinc
3. Copper
4. Aluminium

23.  The corner points enclosed in brackets in orthographic projections indicate that they are
1. Visible corners
2. Invisible corners
3. Imaginary corners
4. Corners touching HP

24.  A tetrahedron has …………….. the number of triangular faces.
1. 6
2. 8
3. 4
4. 3

25.  Surfaces area of A0 size sheet is
1. One square meter
2. One square centimetre
3. One square decimeter
4. None of the above

26.  A point lying behind VP and above HO, In which quadrant does it lie?
1. First
2. Second
3. Third
4. fourth

27.  Difficulties faced in intergroup collaboration are
1. Resistance to change
2. Communication problems
3. Different opinions in groups
4. All the above

28.  The process of measuring the quality of a product or service in terms of an established standard is called
1. Comparative study
2. Process planning
3. Inspection
4. Scheduling

29.  ISO stands for
1. Indian standard Organization
2. Indian Organization for standardization
3. International Standards Organisation
4. International Organisation for Standardization

30. The size of the lathe is specified by
1. Max job length in mm that may be held between centres
2. The height of centres measured over the bed length
3. Maximum diameter job that can be rotated over the bed ways
4. All the above

31. Tapering of the sides of the pattern in the direction parallel to which the pattern is drawn out from a mould is called as
1. Shake
2. Drag
3. Draft
4. Sprue

32.  The colour marked on the surface of a pattern not to be machined is
1. Black
2. Green
3. Red
4. Blue

33.  Flux is not used for welding
1. Cast iron
2. Brass
3. Bronze
4. Carbon steel

34.  Which of the following process uses non-consumable electrodes?
1. MIG welding
2. TIG welding
3. SIG welding
4. Plasma arc welding

35.  For welding non-ferrous metal like brass and bronze, the most suitable flame is
1. Neutral
2. Oxidising
3. Carburising
4. Reducing

36.  The air standard efficiency of any air cycle is given by
1. Heat supplied/work done
2. Heat rejected/heat supplied
3. Work done/heat supplied
4. Work done/heat rejected

37.  The efficiency of the dual cycle as compared to Otto and diesel cycles is
1. More than Otto and diesel cycle
2. Less than Otto and diesel cycle
3. More than Otto cycle and Less than diesel cycle
4. More than diesel cycle and less than Otto cycle

38.  In a double acting reciprocating compressor the suction, compression, delivery of air takes place on
1. The single side of the piston
2. Both sides of the piston
3. Both (1) and (2)
4. None of above

39.  The number of working strokes/min for a four-stroke cycle engine is ………….. the speed of the engine RPM.
1. Equals to
2. Twice
3. Four times
4. Half

40.  The difference between total depth and working depth in a gear tooth is
1. Pitch
2. Clearance
4. Dedendum

41. If the net dynamic force acting on the shaft is equal to zero. then the balancing is called as
1. Static balancing
2. Dynamic balancing
3. Complete balancing
4. All the above

42.  When the motion of the follower takes place at an axis away from the axis of the cam, the follower is called
2. Off-set follower
3. Both (1) and (2)
4. None of the above

43.  The angle between the direction of follower motion and normal to pitch curve of the cam is called as
1. Pitch angle
2. Base angle
3. Pressure angle
4. Trace angle

44.  The relation between Young’s modulus (E). Shear modulus (3) and Poisson’s ratio (1/m) is given by
1. C = mE / 3 (m+1)
2. C = mE / 3 (m-1)
3. C = mE / 2 (m-1)
4. C = mE / 2(m+1)

45.  The deformation per unit length is called as
1. Tensile stress
2. Compressive stress
3. Shear strain
4. Strain

46.  The three moduli of material are related by the equation
1. E = 9KC / (3K+C)
2. E = 9KC / (2C+K)
3. E = 9KC / (2K+C)
4. None of the above

47.  The shear force for a simply supported beam carrying a UDL
1. Is uniform
2. Varies parabolically
3. Varies linearly
4. Is zero

48.  The purpose of heat treatment of steel is/are
1. To change the structure of steel
2. To increase the surface hardness
3. To increase resistance to heat and corrosion
4. All the above

49.  The hardening is followed by …………. process.
1. Tempering
2. Carburising
3. Annealing
4. Nitriding

50.  The addition of …………. improves the corrosion resistance of steel.
1. Chromium
2. Carbon
3. Sulphur
4. Phosphorus

(1) b. (2) d. (3) a. (4) a. (5) b. (6) a. (7) c. (8) a. (9) c. (10) b. (11) d. (12) d. (13) d. (14) b. (15) a. (16) c. (17) b. (18) c. (19) a. (20) c. (21) d. (22) b. (23) b. (24) c. (25)a. (26) b. (27) d. (28) c. (29) d. (30) d. (31) c. (32) a. (33) d. (34) b. (35) b. (36) c. (37) d. (38) b. (39) d. (40) b. (41) a. (42) b. (43) c. (44) d. (45) d. (46) a. (47) c. (48) d. (49) a. (50) a.

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