Machine Design Questions and Answers – Band Brakes & Disk Brakes

This set of Machine Design Multiple Choice Questions & Answers (MCQs) focuses on “Band Brakes & Disk Brakes”.

1. In both simple band brake and differential band brake, at least one end of the band passes through fulcrum.
a) Both the ends
b) Neither end
c) One end
d) None of the listed
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2. Is it possible to prevent back rotation of drum?
a) Yes by using back stop brake
b) No
c) Depends on the angular velocity
d) Only in some specific cases
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3. A self-locking differential brake and back stop brakes is same thing.
a) True
b) False
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4. Band brake has complex construction with large number of parts.
a) Yes
b) It has simple construction
c) It has simple constructions but large number of parts
d) It has complicated construction but small number of parts
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5. Band brakes require _____ maintenance.
a) Little
b) Zero
c) Much
d) None of the listed
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6. The wear of band brake is even.
a) True
b) False
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7. Calculate the braking torque if tension in the two sides is 3500N and 1980N with radius of drum being 160mm.
a) None of the mentioned
b) 243.20N-m
c) 223.4N-m
d) 278.6N-m
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8. Disk brakes have low torque transmitting capacity in high volumes.
a) True
b) False
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9. In drum brakes, as the temperature increases coefficient of friction ______
a) increases
b) decreases
c) remains same
d) Can’t be determined
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10. Loss of torque transmitting capacity at high temperatures is called
a) Fading
b) Rolling
c) Drifting
d) Planking
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11. Disk brakes largely suffer from the problem of self-locking.
a) Yes
b) No
c) Self-locking but it depends on radius of the wheel rotating
d) Material dependent
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12. Disk brakes can be used for opposite rotation of disk also.
a) No they are effective for one direction of motion only
b) They can be used
c) Poor efficiency in opposite direction
d) None of the listed
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13. The disk brake torque is linearly proportional to the actuating force.
a) Yes
b) No, it is proportional to its square
c) Proportional to its cube
d) Independent of force
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Sanfoundry Global Education & Learning Series – Machine Design.
To practice all areas of Machine Design, here is complete set of 1000+ Multiple Choice Questions and Answers.

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