MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 123 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Fracture toughness does not depend upon geometry of the part containing crack |
| A. | true |
| B. | false |
| Answer» C. | |
| 102. |
Stress intensity factor is the critical value of stress at which crack extension occurs. |
| A. | true |
| B. | false |
| Answer» C. | |
| 103. |
The safe stress for a hollow steel column which carries an axial load of 2100 kN is 125 MN/m2. if the external diameter of the column is 30cm, what will be the internal diameter? |
| A. | 25 cm |
| B. | 26.19cm c) 30.14 cm |
| C. | d) 27.9 cm |
| Answer» C. d) 27.9 cm | |
| 104. |
Consider a 250mmx15mmx10mm steel bar which is free to expand is heated from 15C to 40C. what will be developed? |
| A. | compressive stress |
| B. | tensile stress |
| C. | shear stress |
| D. | no stress |
| Answer» E. | |
| 105. |
The bending stress is |
| A. | directly proportional to the distance of layer from the neutral layer |
| B. | inversely proportional to the distance of layer from the neutral layer |
| C. | directly proportional to the neutral layer |
| D. | does not depend on the distance of layer from the neutral layer |
| Answer» B. inversely proportional to the distance of layer from the neutral layer | |
| 106. |
On bending of a beam, which is the layer which is neither elongated nor shortened? |
| A. | axis of load |
| B. | neutral axis |
| C. | center of gravity |
| D. | none of the mentioned |
| Answer» C. center of gravity | |
| 107. |
Which stress comes when there is an eccentric load applied? |
| A. | shear stress |
| B. | bending stress |
| C. | tensile stress |
| D. | thermal stress |
| Answer» C. tensile stress | |
| 108. |
Stress in a beam due to simple bending is |
| A. | directly proportional |
| B. | inversely proportional |
| C. | curvilinearly related |
| D. | none of the mentioned |
| Answer» B. inversely proportional | |
| 109. |
A beam is said to be of uniform strength, if |
| A. | b.m. is same throughout the beam |
| B. | shear stress is the same through the beam |
| C. | deflection is the same throughout the beam |
| D. | bending stress is the same at every section along its longitudinal axis |
| Answer» E. | |
| 110. |
Quality control charts doesn’t depend on which factor? |
| A. | normal distribution |
| B. | random sampling |
| C. | independence between samples |
| D. | binomial distribution |
| Answer» E. | |
| 111. |
Which of the following is incorrect about tolerances? |
| A. | too loose tolerance results in less cost |
| B. | tolerance is a compromise between accuracy and ability |
| C. | too tight tolerance may result in excessive cost |
| D. | fit between mating components is decided by functional requirements |
| Answer» B. tolerance is a compromise between accuracy and ability | |
| 112. |
If a clearance fit is present between shaft and hole, what is the tolerance on shaft or hole for a complete interchangeable approach? |
| A. | ½ of maximum clearance – ½ of minimum clearance |
| B. | ¼ of maximum clearance – ¼ of minimum clearance |
| C. | maximum clearance – minimum clearance |
| D. | ¾ of maximum clearance – ¾ of minimum clearance |
| Answer» B. ¼ of maximum clearance – ¼ of minimum clearance | |
| 113. |
What is mean clearance? |
| A. | maximum size of hole minus maximum size of shaft |
| B. | minimum size of hole minus minimum size of shaft |
| C. | mean size of hole minus mean size of shaft |
| D. | average of both size of shaft and hole |
| Answer» D. average of both size of shaft and hole | |
| 114. |
What is bilateral tolerance? |
| A. | total tolerance is in 1 direction only |
| B. | total tolerance is in both the directions |
| C. | may or may not be in one direction |
| D. | tolerance provided all over the component body |
| Answer» C. may or may not be in one direction | |
| 115. |
Why tolerances are given to the parts? |
| A. | because it’s impossible to make perfect settings |
| B. | to reduce weight of the component |
| C. | to reduce cost of the assembly |
| D. | to reduce amount of material used |
| Answer» B. to reduce weight of the component | |
| 116. |
Maximum carbon content in welding is usually limited to |
| A. | 0.22% |
| B. | 0.8% |
| C. | 1.5% |
| D. | 2% |
| Answer» B. 0.8% | |
| 117. |
In manual assembly, cost of screw is higher than the cost of driving a screw. |
| A. | true |
| B. | false |
| Answer» C. | |
| 118. |
Among casting, forging and forging which has the slowest rate of production? |
| A. | casting |
| B. | forging |
| C. | machining |
| D. | all have equal rate of production |
| Answer» D. all have equal rate of production | |
| 119. |
In forging, metal is in which of the following stage? |
| A. | elastic |
| B. | plastic |
| C. | can be in any stage |
| D. | rigid |
| Answer» C. can be in any stage | |
| 120. |
1 INTRODUCTION TO THE DESIGN PROCESS - FACTORS INFLUENCING MACHINE DESIGN |
| A. | true |
| B. | false |
| Answer» B. false | |
| 121. |
Which process allows controlling grain structure of the product? |
| A. | casting |
| B. | forging |
| C. | none of the mentioned |
| D. | die casting |
| Answer» C. none of the mentioned | |
| 122. |
Stressed parts are always kept in tension. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 123. |
Cast surfaces have good finishing. |
| A. | true |
| B. | false |
| Answer» C. | |