MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering (MCQ) questions and answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following statements are false for belt drives?1. Belt drive is used in applications having constant speed drive2. Belt drives can be used at extremely high speeds3. Belt drives have low power transmitting capacity4. Belt drives need continuous lubrication |
| A. | 1 and 2 |
| B. | 1, 2 and 3 |
| C. | 2, 3 and 4 |
| D. | 1, 2 and 4 |
| Answer» E. | |
| 2. |
Determine power rating of an electric motor if it runs at 1440 r.p.m and line shaft transmits torque of 75 Nm.Assume Reduction ratio = 1.6 |
| A. | 10.36 kW |
| B. | 11.3 kW |
| C. | 7.068 kW |
| D. | 9.12 kW |
| Answer» D. 9.12 kW | |
| 3. |
The objective of considering ergonomics in machine design is to ____1. decrease physical stresses2. make user adapt to the machine3. make machine fit for the user4. improve appearance of the product |
| A. | only 2 |
| B. | 3 and 4 |
| C. | 1 and 3 |
| D. | 1, 3 and 4 |
| Answer» D. 1, 3 and 4 | |
| 4. |
Determine torque transmitted on the pinion shaft if torque transmitted on gear shaft is 20 Nm. Consider Gear ratio = 4 |
| A. | 8 Nm |
| B. | 5 Nm |
| C. | 80 Nm |
| D. | 16 Nm |
| Answer» C. 80 Nm | |
| 5. |
Why is the load carrying capacity low in ball bearings?1. Due to line contact between inner race and the ball2. Due to greater axial dimensions 3. Due to less radial dimensions4. Due to point contact between inner race and the ball |
| A. | 1 and 3 |
| B. | only 1 |
| C. | only 4 |
| D. | 2 and 4 |
| Answer» D. 2 and 4 | |
| 6. |
Match the following Manufacturing processes with their Types and select the correct option.1. Metal forming -------------------------------------- A. Grinding2. Surface finish --------------------------------------- B. Rivetting 3. Sheet metal working ------------------------------- C. Extrusion4. Metal joining ----------------------------------------D. Blanking |
| A. | 1 A, 2 C, 3 D, 4 B |
| B. | 1 C, 2 A, 3 D, 4 B |
| C. | 1 B, 2 A, 3 D, 4 C |
| D. | 1 D, 2 B, 3 A, 4 C |
| Answer» C. 1 B, 2 A, 3 D, 4 C | |
| 7. |
The process of joining similar or dissimilar materials by heating them below 450 C using non-ferrous filler material is called as ______ |
| A. | Brazing |
| B. | Soldering |
| C. | Welding |
| D. | All of the above |
| Answer» C. Welding | |
| 8. |
Which of the following statements is/are false for machine tools?1. Pillar drilling machine drills holes up to 75 mm 2. Regulating wheel is a component of surface grinding machine3. Sensitive drilling machine is also known as bench drilling machine 4. The chuck of an internal grinding machine placed in tailstock is driven by an electric motor |
| A. | Only 1 |
| B. | 2 and 4 |
| C. | 1 and 3 |
| D. | All of the above |
| Answer» C. 1 and 3 | |
| 9. |
The elongation of a bar is 0.5 mm, when a tensile stress of 200 N/mm acts on it. Determine original length of a bar if modulus of elasticity is 150 x 10. |
| A. | 375.93 mm |
| B. | 300 mm |
| C. | 360 mm |
| D. | None of the above |
| Answer» B. 300 mm | |
| 10. |
Which of the following statements are false for reaction turbines?1. Flow of water can be regulated without any losses 2. It works on the principle of impulse and reaction3. They are suitable for low heads 4. Water flows at constant atmospheric pressure over the runner |
| A. | 1, 2 and 3 |
| B. | 2 and 4 |
| C. | 1 and 4 |
| D. | 1, 2, 3 and 4 |
| Answer» D. 1, 2, 3 and 4 | |
| 11. |
Smoke tube boilers have large water to steam ratio, hence _____ |
| A. | have high evaporation rates |
| B. | are slow in operations |
| C. | temperature stresses inducing failure of feed water arrangement are maximum |
| D. | all of the above |
| Answer» C. temperature stresses inducing failure of feed water arrangement are maximum | |