MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Design knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A pivoted double block brake has a drum radius of 280mm with two shoes subtending an angle of 100 . Maximum pressure intensity is 0.5N/mm . If the width of friction lining is 90mm, find the reaction at pivot in horizontal direction. Assume coefficient of friction as 0.2. |
| A. | None of the listed |
| B. | 21123N |
| C. | 17200N |
| D. | 16789N |
| Answer» D. 16789N | |
| 2. |
A pivoted double block brake has a drum radius of 280mm with two shoes subtending an angle of 100 . Maximum pressure intensity is 0.5N/mm . If the width of friction lining is 90mm, find the torque capacity f each shoe. Assume coefficient of friction as 0.2. |
| A. | 789N-m |
| B. | 1081N-m |
| C. | 945N-m |
| D. | None of the listed |
| Answer» C. 945N-m | |
| 3. |
A pivoted double block brake has a drum radius of 280mm with two shoes subtending an angle of 100 . Calculate the distance of pivot from axis of drum. |
| A. | 321.5mm |
| B. | 314.3mm |
| C. | 289.5mm |
| D. | None of the mentioned |
| Answer» C. 289.5mm | |
| 4. |
Shoe is constrained to move towards the drum to compensate for the moment acting. |
| A. | Yes |
| B. | It compensates for wear |
| C. | It compensates for both wear and moment |
| D. | None of the listed |
| Answer» C. It compensates for both wear and moment | |
| 5. |
The equivalent coefficient of friction in case of block brake with long shoe is denoted by [4Sin /2 +sin4 ]. |
| A. | True |
| B. | False |
| Answer» C. | |