Theory Of Mechanics Set 3

Mechanical Engineering

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This set of Theory of Mechanics Multiple Choice Questions & Answers (MCQs) focuses on Theory Of Mechanics Set 3

Q1 | Frictional torque transmission through plate clutch is equivalent to____
  • conical pivot bearing
  • flat pivot bearing
  • trapezoidal pivot bearing
  • flat roller bearing
Answer: flat roller bearing
Q2 | In case of cone clutch, power transmission is same as that of________
  • flat pivot bearing
  • flat collar bearing
  • trapezoidal pivot bearing
  • conical pivot bearing
Answer: trapezoidal pivot bearing
Q3 | Multiple clutch is kind of_________
  • positive clutch
  • cone clutch
  • centrifugal clutch
  • disc clutch
Answer: disc clutch
Q4 | Among which clutch heat dissipation is a serious problem?
  • multiple clutch
  • positive clutch
  • cone clutch
  • centrifugal clutch
Answer: multiple clutch
Q5 | In case of clutch , uniform pressure theory is applicable for
  • old clutch
  • new clutch
  • rusted clutch
  • clutch made of hard material
Answer: new clutch
Q6 | Centrifugal clutch are used in _____
  • truck
  • racing car
  • hack saw
  • mopeds
Answer: mopeds
Q7 | A friction clutch should be designed on the assumption of
  • uniform wear
  • uniform pressure
  • constant friction
  • any one
Answer: uniform wear
Q8 | Considering the safe design, the friction clutch should be designed _______
  • assuming uniform pressure
  • assuming uniform wear
  • assuming any criteria, either uniform pressure or uniform wear
  • assuming uniform pressure for high torque and uniform wear for low torque
Answer: assuming uniform wear
Q9 | The equivalent coefficient of friction for a cone clutch is ____.
  • µ sinα
  • µ tanα
  • µ/sinα
  • µ/tanα
Answer: µ/sinα
Q10 | Frictional torque transmission through multi plate clutch is equivalent to____.
  • conical pivot bearing
  • flat pivot bearing
  • trapezoidal pivot bearing
  • flat roller bearing
Answer: flat roller bearing
Q11 | In case of multiplate clutch, power transmission is same as that of ______.
  • flat pivot bearing
  • flat pivot bearing
  • trapezoidal pivot bearing
  • conical pivot bearing
Answer: flat pivot bearing
Answer: flat pivot bearing
Q12 | Single plate clutch is a kind of _________.
  • positive clutch
  • cone clutch
  • centrifugal clutch
  • disc clutch
Answer: disc clutch
Q13 | Which of the following is an example of friction clutch?
  • disc clutch
  • cone clutch
  • centrifugal clutch
  • all of the above
Answer: all of the above
Q14 | The frictional torque transmitted by a disc clutch is same as that of _____.
  • flat pivot bearing
  • flat collar bearing
  • conical pivot bearing
  • trapezoidal pivot bearing
Answer: flat collar bearing
Q15 | The frictional torque transmitted by a cone clutch is same as that of ____.
  • flat pivot bearing
  • flat collar bearing
  • conical pivot bearing
  • trapezoidal pivot bearing
Answer: trapezoidal pivot bearing
Q16 | For safe design, a frictional clutch is designed assuming ____.
  • uniform pressure theory
  • uniform wear theory
  • any one of the two
  • none of the above
Answer: uniform wear theory
Q17 | In multiple friction clutch, the number of active friction surfaces is ____.
  • 2n
  • n
  • 2(n-1)
  • n-1
Answer: n-1
Q18 | Friction torque transmitted by a disc or plat clutch is same as that of ____.
  • flat pivot bearing
  • flat collar bearing
  • conical pivot bearing
  • truncated conical pivot bearing
Answer: flat collar bearing
Q19 | For multiple plate friction clutch with n plates, the number of active surfaces n
  • n
  • n+1
  • n-1
  • n/2
Answer: n
Q20 | A single plate clutch is transmitting power, the inner and other radii of the plate are 10 cm and 22.5 cm respectively. Using the radius uniform wear theory, the maximum pressure intensity occurs at a radius of ____.
  • 10 cm
  • 15 cm
  • 16.25 cm
  • 22.5 cm
Answer: 10 cm
Q21 | Torque transmitted by single plate clutch with axial spring load = 1 kN, and inner and outer radii of 10 cm and 15 cm and µ = 0.5 with assumption of uniform wear is ____.
  • 250 n-m
  • 125 n-m
  • 62.5 n-m
  • not possible to find with given data
Answer: 62.5 n-m
Q22 | A multiple clutch with 5 plate transmits torque of 400 N-m. If µ = 0.5 and inner radius = 10 cm and outer radius = 15 cm and four spring expert-axial and load per spring is ___.
  • 200 n
  • 300 n
  • 400 n
  • 1280 n
Answer: 400 n
Q23 | Determine the axial force required to engage a cone clutch transmitting 25 kW power at 750 rpm. Average friction diameter of the cone is 400 mm, semicone angle 10 degree and coefficient of friction 0.25.
  • 325.30 nm and 1100.25 n
  • 318.31 nm and 1105.47 n
  • 320.25 nm and 1008.20 n
  • 325.89 nm and 1120.30 n
Answer: 318.31 nm and 1105.47 n
Q24 | Determine the axial force required to engage a cone clutch transmitting 25 kW power at 750 rpm. Average friction diameter of the cone is 400 mm, semicone angle 60 degree and coefficient of friction 0.25.
  • 325.30 nm and 1100.25 n
  • 318.31 nm and 1105.47 n
  • 320.25 nm and 1008.20 n
  • 325.89 nm and 1120.30 n
Answer: 318.31 nm and 1105.47 n
Q25 | Can simple band brake be made of self-locking type?
  • yes
  • yes, but it will need many modifications
  • yes, but with few limitations
  • no
Answer: yes, but with few limitations
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