Machine Kinematics MCQ

Test your knowledge with important Machine Kinematics MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Machine Kinematics MCQs at Bissoy

• Find maximum sliding velocity in cm/s from the given data addendum = 1 module = 5mm Pitch line speed = 1.2m/s Pressure angle of involute profile: 20 degrees Tp = 20 Gear ratio = 2
  ক

  45.5

  খ

  46.8

  গ

  45.1

  ঘ

  47.2
• From the following data: Teeth on pinion: 30 Teeth on gear: 80 Pressure angle: 20° Module: 12mm Addendum: 10mm Find the contact ratio.
  ক

  1.5

  খ

  1.75

  গ

  2

  ঘ

  1,33
• Maximum sliding velocity is the sum of angular velocities and its product with the length of path of contact.
  ক

  True

  খ

  False
• From the following data: Teeth on pinion: 30 Teeth on gear: 80 Pressure angle: 20° Module: 12mm Addendum: 10mm Find the length of arc of contact in mm.
  ক

  52.333

  খ

  55.66

  গ

  53.22

  ঘ

  54.55
• From the following data: Teeth on pinion: 30 Teeth on gear: 80 Pressure angle: 20° Module: 12mm Addendum: 10mm Find the length of path of contact in mm.
  ক

  52.3

  খ

  55.4

  গ

  53.2

  ঘ

  54.5
• From the following data, find the addendum in mm: Teeth on each wheel: 40 Pressure angle: 20° Module: 6mm Arc of contact/ pitch: 1.75
  ক

  6.12

  খ

  6.51

  গ

  6.61

  ঘ

  6.81
• Which of the following is true for Length of path of contact?
  ক

  Sum of path of recess and path of approach

  খ

  Difference of path of approach and path of recess

  গ

  Twice the arc of approach

  ঘ

  Twice the path of recess
• Which of the following is true for Length of arc of contact?
  ক

  Sum of Arc of recess and Arc of approach

  খ

  Difference of arc of approach and arc of recess

  গ

  Twice the arc of approach

  ঘ

  Twice the arc of recess
• Addendum circle of the gear wheel has the shortest radius.
  ক

  True

  খ

  False
• Which of the following is a commonly used pressure angle in gears?
  ক

  20

  খ

  10

  গ

  12

  ঘ

  17
• Given: Involute profile teeths of mating gear: 20 and 40 Pressure angle = 20° module = 10mm The constraint: The addendum on each wheel is to be made of such a length that the line of contact on each side of the pitch point has half the maximum possible length. Find the contact ratio.
  ক

  1.23

  খ

  1.52

  গ

  1.74

  ঘ

  1.97
• Given: Involute profile teeths of mating gear: 20 and 40 Pressure angle = 20° module = 10mm The constraint: The addendum on each wheel is to be made of such a length that the line of contact on each side of the pitch point has half the maximum possible length. Find the length of arc of contact in mm.
  ক

  56.4

  খ

  54.6

  গ

  56.3

  ঘ

  51.3
• Given: Involute profile teeths of mating gear: 20 and 40 Pressure angle = 20° module = 10mm The constraint: The addendum on each wheel is to be made of such a length that the line of contact on each side of the pitch point has half the maximum possible length. Find the length of path of contact in mm.
  ক

  56.4

  খ

  56.2

  গ

  56.3

  ঘ

  51.3
• Given: Involute profile teeths of mating gear: 20 and 40 Pressure angle = 20° module = 10mm The constraint: The addendum on each wheel is to be made of such a length that the line of contact on each side of the pitch point has half the maximum possible length. Find the addendum height for the smaller gear wheel in mm.
  ক

  6.4

  খ

  6.2

  গ

  6.3

  ঘ

  6
• Given, Involute profile teeths of mating gear: 20 and 40 Pressure angle = 20° module = 10mm The constraint: The addendum on each wheel is to be made of such a length that the line of contact on each side of the pitch point has half the maximum possible length. Find the addendum height for the larger gear wheel in mm.
  ক

  6.5

  খ

  6

  গ

  6.8

  ঘ

  7
• If the point of contact between the two teeth is always on the involute profiles of both the teeth, then which of the phenomenon will occur?
  ক

  Avoidance of interference

  খ

  Occurrence of interference

  গ

  Increase in length of path of contact

  ঘ

  Increase in length of arc of contact
• For the same pitch, which of the following statement is true?
  ক

  Cycloidal gears are stronger than involute gears

  খ

  Involute gears are stronger than cycloidal gears

  গ

  Both cycloidal and Involute gears have equal strength

  ঘ

  Cycloidal gears are stronger for lower pitch only
• In which of the following gears, interference occurs?
  ক

  Cycloidal

  খ

  Involute

  গ

  Epi cycloidal

  ঘ

  Hypo-cycloidal
• The phenomenon when the tip of tooth undercuts the root on its mating gear is known as _______
  ক

  Involution

  খ

  Interference

  গ

  Cycloidal motion

  ঘ

  Undercutting
• By changing the angle of obliquity of the teeth, interference can be avoided.
  ক

  True

  খ

  False
• Which of the following is a disadvantage of involute gears?
  ক

  Occurrence of interference

  খ

  Non occurrence of interference

  গ

  Pressure angle remains constant

  ঘ

  Face and flank are generated by single curve
• A pair of helical gears has fewer teeth in contact as compared to an equivalent pair of spur gears.
  ক

  True

  খ

  False
• In the case of spur gears, the mating teeth execute pure rolling motion with respect to each other from the commencement of engagement to its termination.
  ক

  True

  খ

  False
• Gears with involute tooth profile transmit constant velocity ratios between shafts connected by them.
  ক

  True

  খ

  False
• Spiral bevel gears designed to be used with an offset in their shafts are called ‘hypoid gears’
  ক

  True

  খ

  False
• A pair of gears forms a rolling pair.
  ক

  True

  খ

  False
• A speed reducer unit consists of a double-threaded worm of pitch = 11 mm and a worm wheel of pitch diameter = 84 mm. The ratio of the output torque to the input to rque is
  ক

  7·6

  খ

  12

  গ

  24

  ঘ

  42
• Speed reduction in a gear box is achieved using a worm and worm wheel. The worm wheel has 30 teeth and a pitch diameter of 210 mm. If the pressure angle of the worm is 20o, what is the axial pitch of the worm?
  ক

  7 mm

  খ

  22 mm

  গ

  14 mm

  ঘ

  63 mm
• A fixed gear having 100 teeth meshes with another gear having 25 teeth, the centre lines of both the gears being joined by an arm so as to form an epicyclic gear train. The number of rotations made by the smaller gear for one rotation of the arm is
  ক

  3

  খ

  4

  গ

  5

  ঘ

  6
• There are six gears A, B, C, D, E, F in a compound train. The numbers of teeth in the gears are 20, 60, 30, 80, 25 and 75 respectively. The ratio of the angular speeds of the driven (F) to the driver (A) of the drive is
  ক

  1/24

  খ

  1/8

  গ

  4/15

  ঘ

  12