1. Which of the following is true for the multiple start screw threads?
Correct : C. it gives a quick transverse
2. Statement 1: Flank angle of symmetrical thread is known as thread’s half-angle. Statement 2: It is measured parallel to the axis of a thread.
Correct : A. t, f
3. Flanks of the threads connect the crest with the roots.
Correct : A. true
4. What is the effect of improper alignment of each tooth?
Correct : C. load will not distributed evenly
5. Which of the following is not true about concentricity of teeth?
Correct : D. should be tested to ensure the proper heat treatment
6. Which of the following option is true about an analytical method of inspection of gears?
Correct : C. all individual elements of gear teeth are checked
7. Which of the following element is not determined by analytical inspection?
Correct : B. composite vibrations
8. Statement 2: Gear blank should be tested for dimensional accuracy.
Correct : D. t, t
9. Which of the following is not determined by the functional type of inspection?
Correct : A. lead
10. Which of the following statement is true about inspection of gear?
Correct : B. backlash is determined by analytic inspection
11. Which of the following machine is used for rolling tests?
Correct : A. parkson gear tester
12. If reference circle of gear is eccentric then which error is reflected by this eccentricity?
Correct : C. pitch error
13. Statement 2: Accuracy of individual elements is necessary for precision gears.
Correct : D. f, t
14. best method for examining the surface finish. Visual, touch and scratch inspection methods are not as accurate as microscopic. In these methods, minute flaws can’t be detected.
Correct : C. 0.01 mm
15. Which of the following material is not used for rubbing on the surface to be inspected in scratch inspection?
Correct : B. hard material
16. Statement 2: Direct instrument measurement is enabled to determine a numerical value of surface finish.
Correct : A. f, t
17. What is the limitation of microscopic inspection to check surface finish?
Correct : B. small portion of surface can be detected at a time
18. In the method of microscopic inspection what is the angle of beam light with the work?
Correct : C. 600
19. Which of the following is true for a method of measurement of surface finish with surface photographs?
Correct : A. different type of illumination is needed
20. In case of vertical illumination in measuring surface finish with surface photographs, which will appear as bright area?
Correct : A. flat portion
21. Which of the following method use pendulum in measuring the surface finish?
Correct : B. wallace surface dynamometer
22. Which of the following is not true for the method of measurement of surface finish by micro interferometer?
Correct : C. depth of defect can’t be measured
23. Which of the following is the direct measure of surface finish in Wallace surface dynamometer?
Correct : A. time of swing
24. Which of the following is a destructive method in measuring surface finish?
Correct : B. taper sectioning
25. In which type of system does power transmission takes place through compressed air?
Correct : C. pneumatic system
26. The compressed air flows to the actuator through
Correct : A. pipes and valves
27. The compressed air is delivered to the pneumatic system through the air compressor.
Correct : A. true
28. What is the function of the air dryer?
Correct : B. removes moisture
29. Which part of the Pneumatic system stores the compressed air?
Correct : C. air receiver tank
30. Which type of pumps can give discharge even at high pressure?
Correct : C. rotary pumps
31. Which type of component in the hydraulic system supports less vibration and noise?
Correct : C. rotatory pumps
32. Hydraulic systems are slower in operation.
Correct : A. true
33. What prevents the leakage of oil inside an unbalanced vane pump?
Correct : A. vanes
34. Which among the following are not the main selection criteria for selection of hydraulic pumps?
Correct : D. weight
35. Which is the cheapest device for measuring flow / discharge rate.
Correct : C. orificemeter
36. The principle of Orificemeter is same as that of Venturimeter.
Correct : A. true
37. The Orificemeter readings are more accurate than Venturimeter.
Correct : B. false
38. The Orificemeter readings are more accurate than Pitot tube readings.
Correct : B. false
39. The Orificemeter has a smooth edge hole.
Correct : B. false
40. A nanometre is connected to a section which is at a distance of about 4 to 6 times the pipe diameter upstream from orifice plate.
Correct : B. false
41. Venturimeter is based on integral form of Euler’s equation.
Correct : A. true
42. Orifice Meter can only be used for measuring rate of flow in open pipe like structure.
Correct : A. true
43. Orifice meter consists of a flat rectangular plate.
45. Which of the following can be used for measuring temperature?
Correct : B. fluid expansion system
46. IPTS stands for
Correct : A. international practical temperature scale
47. In liquid in steel bulb thermometer, which liquid can be used for measuring temperature up to 60000C?
Correct : A. mercury
48. Which of the following is used as indication instrument in a liquid expansion system?
Correct : B. bourdon tube
49. Which of the following is true for bimetallic type thermometer?
Correct : B. two metals have different temperature coefficient
50. When bimetallic thermometer heated, curling occurs to the side of metal with least temperature coefficients.
Correct : A. true
51. Analogous quantities of heat flow and temperature in electrical are and
Correct : B. current and potential
52. Ratio of net amount of heat received and stored in the body for certain time interval is known as
Correct : C. thermal storage capacity
53. Heat transfer coefficient of a material with length l is
Correct : A. k/l
54. Resistance temperature detector is
Correct : A. a electrical transducer
55. Sensing element in the thermometer must provide
Correct : C. large change in resistance
56. Resistance thermometer provides the change in electrical resistance.
Correct : A. true
57. If the sensing element is large, then less amount of heat is required.
Correct : B. false
58. In a temperature sensing element
Correct : D. high value of α is required
59. Nickel and its alloys can be used over a temperature range of
Correct : A. 100 to 450 k
60. How can corrosion be prevented in a resistance thermometer?
Correct : B. by enclosing the elements in a glass tube
61. What is the maximum permissible error for class I micrometers?
Correct : B. 0.004 mm
62. Which of the following is caused by careless handling?
Correct : B. gross error
63. ‘A system will be error free if we remove all systematic error’.
Correct : B. false
64. Which of the following is not a fundamental quantity?
Correct : B. angle
65. Which standard is fixed and used for industrial laboratories?
Correct : C. secondary standard
66. Which of the following error is caused by poor calibration of the instrument?
Correct : C. systematic error
67. How systematic errors are eliminated?
Correct : B. replacement of instrument
68. Starting position of an object is represented as x=5.1±0.2m and finishing position as y=6.9±0.3m. What will be the displacement and error in displacement?
Correct : C. displacement = 1.8m, error = 0.36m
69. Which of the following is correct for selective assembly?
Correct : D. this method is followed in ball and roller bearing units
70. For checking straightness, straight edge is placed over a surface and these two are viewed against the light. Which of the following option true if colour of light is red?
Correct : D. gap between 0.0012 to 0.0017 mm
71. Which of the following is the best for the examination of surface finish?
Correct : D. microscopic inspection
72. What is the relationship between Orificemeter diameter and pipe diameter
Correct : C. orificemeter diameter is one fourth times the pipe diameter