MCQOPTIONS
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MCQOPTIONS
This section includes 180 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
‘A system will be error free if we remove all systematic error’. |
| A. | true |
| B. | false |
| Answer» C. | |
| 2. |
How angle greater than 90° is measured? |
| A. | by repeating gauges |
| B. | using square plate |
| C. | using sine bar |
| D. | using auto collimator |
| Answer» C. using sine bar | |
| 3. |
How 34’ can be built by using angle gauges? |
| A. | 27’+9’-3’+1’ |
| B. | 26’+10’-2’ |
| C. | 27’+10’-3’ |
| D. | 27’+8’ |
| Answer» B. 26’+10’-2’ | |
| 4. |
Which of the following option is not correct for ‘full interchangeability’? |
| A. | this type of interchangeability is not feasible sometimes |
| B. | requires machine which can maintain low process capability |
| C. | machines with very high accuracy are necessary |
| D. | for interchangeable production, this type of interchangeability is not must |
| Answer» C. machines with very high accuracy are necessary | |
| 5. |
Starting position of an object is representedas x=5.1±0.2m and finishing position asy=6.9±0.3m. What will be the displacementand error in displacement? |
| A. | displacement = 1m, error = 0.5m |
| B. | displacement = 2m, error = 0.36m |
| C. | displacement = 1.8m, error = 0.36m |
| D. | displacement = 1.5m, error = 0.4m |
| Answer» D. displacement = 1.5m, error = 0.4m | |
| 6. |
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. |
| A. | 0.0001 mm |
| B. | 0.001 mm |
| C. | 0.01 mm |
| D. | 0.1 mm |
| Answer» D. 0.1 mm | |
| 7. |
Which of the following option is correct in given statements about interchangeability? Statement 1: Standardisation is not so much of importance for interchangeability. Statement 2: Interchangeability follows ‘normal distribution’. |
| A. | f, t |
| B. | t, t |
| C. | f, f |
| D. | t, f |
| Answer» B. t, t | |
| 8. |
Venturimeter is based on integral form of Euler’s equation. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 9. |
‘Zero error is an indication of instrumental error’. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 10. |
‘A system will be error free if we removeall systematic error’. |
| A. | true |
| B. | false |
| Answer» C. | |
| 11. |
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. |
| A. | t, f |
| B. | f, f |
| C. | t, t |
| D. | f, t |
| Answer» B. f, f | |
| 12. |
Analogous quantities of heat flow and temperature in electrical are and |
| A. | potential and current |
| B. | current and potential |
| C. | power and potential |
| D. | current and power |
| Answer» C. power and potential | |
| 13. |
3 TEMPERATURE: BIMETALLIC STRIP, THERMOCOUPLES |
| A. | strain |
| B. | pressure |
| C. | displacement |
| D. | voltage |
| Answer» D. voltage | |
| 14. |
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? |
| A. | gap between 0.12 to 0.17 mm |
| B. | gap between 0.2 to 0.7 mm |
| C. | gap between 1.7 to 2 mm |
| D. | gap between 0.0012 to 0.0017 mm |
| Answer» E. | |
| 15. |
How can corrosion be prevented in a resistance thermometer? |
| A. | by immersing the setup in oil |
| B. | by enclosing the elements in a glass tube |
| C. | by using guard rings |
| D. | by painting the elements |
| Answer» C. by using guard rings | |
| 16. |
Nickel and its alloys can be used over a temperature range of |
| A. | 100 to 450 k |
| B. | 10 to 50 k |
| C. | 0 to 25 k |
| D. | 5 to 15 k |
| Answer» B. 10 to 50 k | |
| 17. |
In a temperature sensing element |
| A. | low value of α is required |
| B. | infinite value of α is required |
| C. | α must be zero |
| D. | high value of α is required |
| Answer» E. | |
| 18. |
Most metallic conductors have a |
| A. | neutral temperature coefficient of resistance |
| B. | negative temperature coefficient of resistance |
| C. | positive temperature coefficient of resistance |
| D. | zero temperature coefficient of resistance |
| Answer» D. zero temperature coefficient of resistance | |
| 19. |
If the sensing element is large, then less amount of heat is required. |
| A. | true |
| B. | false |
| Answer» C. | |
| 20. |
Resistance thermometer provides the change in electrical resistance. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 21. |
Sensing element in the thermometer must provide |
| A. | small change in resistance |
| B. | no change in resistance |
| C. | large change in resistance |
| D. | infinite change in resistance |
| Answer» D. infinite change in resistance | |
| 22. |
Relation between temperature and resistance of a conductor is |
| A. | rt = rref [1+t] |
| B. | rt = rref [1+α∆t] |
| C. | rt = rref [1-αt] |
| D. | rt = rref [1-t] |
| Answer» C. rt = rref [1-αt] | |
| 23. |
Resistance temperature detector is |
| A. | a electrical transducer |
| B. | a mechanical transducer |
| C. | a chemical transducer |
| D. | a physical transducer |
| Answer» B. a mechanical transducer | |
| 24. |
Heat transfer coefficient of a material with length l is |
| A. | k/l |
| B. | l/k |
| C. | 1/k |
| D. | kl |
| Answer» B. l/k | |
| 25. |
Ratio of net amount of heat received and stored in the body for certain time interval is known as |
| A. | temperature |
| B. | thermal coefficient |
| C. | thermal storage capacity |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 26. |
Analogous quantities of heat flow and temperature in electrical are                            and |
| A. | potential and current |
| B. | current and potential |
| C. | power and potential |
| D. | current and power |
| Answer» C. power and potential | |
| 27. |
When bimetallic thermometer heated, curling occurs to the side of metal with least temperature coefficients. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 28. |
Which of the following is true for bimetallic type thermometer? |
| A. | two metals have same temperature coefficients |
| B. | two metals have different temperature coefficient |
| C. | one metal is cooled always |
| D. | none of the mentioned |
| Answer» C. one metal is cooled always | |
| 29. |
Which of the following is used as indication instrument in a liquid expansion system? |
| A. | bellows |
| B. | bourdon tube |
| C. | ammeter |
| D. | thermometer |
| Answer» C. ammeter | |
| 30. |
In liquid in steel bulb thermometer, which liquid can be used for measuring temperature up to 60000C? |
| A. | mercury |
| B. | ether |
| C. | water |
| D. | none of the mentioned |
| Answer» B. ether | |
| 31. |
IPTS stands for |
| A. | international practical temperature scale |
| B. | indian primary temperature scale |
| C. | international primary temperature scale |
| D. | international practical temperature standard |
| Answer» B. indian primary temperature scale | |
| 32. |
TOPIC 5.3 TEMPERATURE: BIMETALLIC STRIP, THERMOCOUPLES |
| A. | strain |
| B. | pressure |
| C. | displacement |
| D. | voltage |
| Answer» D. voltage | |
| 33. |
Which of the following can be used for measuring temperature? |
| A. | metallic diaphragm |
| B. | fluid expansion system |
| C. | capsule |
| D. | bourdon tube |
| Answer» C. capsule | |
| 34. |
Orifice meter consists of a flat rectangular plate. |
| A. | true |
| B. | false |
| Answer» C. | |
| 35. |
Venturimeter is based on integral form of Euler’s equation. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 36. |
Orifice Meter can only be used for measuring rate of flow in open pipe like structure. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 37. |
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. |
| A. | true |
| B. | false |
| Answer» C. | |
| 38. |
The Orificemeter has a smooth edge hole. |
| A. | true |
| B. | false |
| Answer» C. | |
| 39. |
The Orificemeter readings are more accurate than Pitot tube readings. |
| A. | true |
| B. | false |
| Answer» C. | |
| 40. |
The Orificemeter readings are more accurate than Venturimeter. |
| A. | true |
| B. | false |
| Answer» C. | |
| 41. |
What is the relationship between Orificemeter diameter and pipe diameter |
| A. | orificemeter diameter is 0.5 times the pipe diameter |
| B. | orificemeter diameter is one third times the pipe diameter |
| C. | orificemeter diameter is one fourth times the pipe diameter |
| D. | orificemeter diameter is equal to the pipe diameter |
| Answer» D. orificemeter diameter is equal to the pipe diameter | |
| 42. |
The principle of Orificemeter is same as that of Venturimeter. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 43. |
Which is the cheapest device for measuring flow / discharge rate. |
| A. | venturimeter |
| B. | pitot tube |
| C. | orificemeter |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 44. |
Which among the following are not the main selection criteria for selection of hydraulic pumps? |
| A. | discharge |
| B. | pressure |
| C. | speed |
| D. | weight |
| Answer» E. | |
| 45. |
What prevents the leakage of oil inside an unbalanced vane pump? |
| A. | vanes |
| B. | cylindrical rotor |
| C. | screw |
| D. | difference between the pressure of inlet and outlet |
| Answer» B. cylindrical rotor | |
| 46. |
Hydraulic systems are slower in operation. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 47. |
Which type of component in the hydraulic system supports less vibration and noise? |
| A. | flow control valve |
| B. | oil reservoir |
| C. | rotatory pumps |
| D. | pressure gauge |
| Answer» D. pressure gauge | |
| 48. |
Which type of pumps can give discharge even at high pressure? |
| A. | multistage pumps |
| B. | monoblock pumps |
| C. | rotary pumps |
| D. | single stage pumps |
| Answer» D. single stage pumps | |
| 49. |
Which part of the Pneumatic system stores the compressed air? |
| A. | air dryer |
| B. | air compressor |
| C. | air receiver tank |
| D. | air lubricator |
| Answer» D. air lubricator | |
| 50. |
What is the function of the air dryer? |
| A. | removes dirt |
| B. | removes moisture |
| C. | controls the rate of flow |
| D. | controls the pressure |
| Answer» C. controls the rate of flow | |