Standard Spur Gears MCQ

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

• The velocity ratio between pinion and gear in a gear drive is 2.3, the module of teeth is 2.0 mm and sum of number of teeth on pinion and gear is 99. What is the centre distance between pinion and the gear?
  ক

  49.5 mm

  খ

  99 mm

  গ

  148.5 mm

  ঘ

  198 mm
• Two mating spur gears have 40 and 120 teeth respectively. The pinion rotates at 1200 rpm and transmits a torque of 20 Nm. The torque transmitted by the gear is
  ক

  6.6 Nm

  খ

  20 Nm

  গ

  40 Nm

  ঘ

  60Nm
• If the pressure angle of the rack is 20°, then force acting along the line of action between the rack and the gear teeth is
  ক

  250 N

  খ

  342 N

  গ

  532 N

  ঘ

  600 N
• If the drive efficiency is 80%, then torque required on the input shaft to create 1000 N output thrust is
  ক

  20 Nm

  খ

  25 Nm

  গ

  32 Nm

  ঘ

  50 Nm
• Twenty degree full depth involute profiled 19-tooth pinion and 37-tooth gear are in mesh. If the module is 5 mm, the centre distance between the gear pair will be
  ক

  140 mm

  খ

  150 mm

  গ

  280 mm

  ঘ

  300 mm
• Interference in a pair of gears is avoided, if the addendum circles of both the gears intersect common tangent to the base circles within the points of tangency.
  ক

  True

  খ

  False
• Tooth interference in an external in volute spur gear pair can be reduced by
  ক

  Decreasing center distance between gear pair

  খ

  Decreasing module

  গ

  Decreasing pressure angle

  ঘ

  Increasing number of gear teeth
• A helical gear has the active face width equal to b pitch p and helix angle α. What should be the minimum value of b in order that contact is maintained across the entire active face of the gear?
  ক

  p cosα

  খ

  p secα

  গ

  p tanα

  ঘ

  p cotα
• A spur gear of 40 teeth is machined in a gear hobbing machine using a double start hob cutter. The speed ratio between the hob and the blank is
  ক

  1:20

  খ

  1:40

  গ

  40:1

  ঘ

  20:1