Practice Test: Question Set - 02
1. The portion of the gear tooth between the pitch circle and outer circle is called
- (A) Top land
- (B) Face
- (C) Flank
- (D) Bottom land
2. An automobile gearbox has
- (A) Simple gear
train
- (B) Compound
gear train
- (C) Epicyclic
gear train
- (D) None of the
above
3. When the velocity ratio is high and space is limited, use
- (A) Spur gears
- (B) Bevel gears
- (C) Worm gears
- (D) Helical
gears
4. The angle through which a gear turns from the beginning of contact of a pair of teeth until the contact arrives at the pitch point is known as
- (A) Angle of
contact
- (B) Angle of
recess
- (C) Angle of
approach
- (D) Angle of
action
5. Compared with full depth teeth, stub tooth has
- (A) Short
addendum and short dedendum
- (B) Long
addendum and long dedendum
- (C) Same
addendum and same dedendum
- (D) Short
addendum and same dedendum
6. The gear tooth system that will transmit very high load is
- (A) 20°
full depth involute
- (B) 20° full
stub involute
- (C) 14.5°
full depth involute
- (D) 14.5°
stub involute
7. Lewis equation of gear tooth is based on
- (A) Maximum
crushing stress in gear tooth
- (B) Maximum
bending stress in gear tooth
- (C) Maximum
shear stress in gear tooth
- (D) Maximum
contact stress in gear tooth
8. Dynamic force on gear tooth depends upon
- (A) Pitch
line velocity
- (B) Sum
of errors between two meshing teeth
- (C) Modulus
of elasticity of pinion and gear materials
- (D) All
of the above
9. Surface endurance strength of gear tooth depends upon
- (A) Surface
finish of gear tooth
- (B) Ultimate
tensile strength of gear materials
- (C) Surface
hardness of gear tooth
- (D) Modulus
of elasticity of gear materials
10. When the axes of two shafts are parallel, use
- (A) Crossed
helical gears
- (B) Bevel gears
- (C) Worm gears
- (D) Spur
or helical gears
11. Cycloidal tooth gears are used in
- (A) Automobile
gearbox
- (B) Machine
tool gearbox
- (C) Spring
driven watches and clocks
- (D) Materials
handling equipment
12. For transmitting power, a simple gear train consisting of 12 gears is used. Then the driver and driven shafts will be rotating in
- (A) Same
direction
- (B) Opposite
direction
- (C) Same
or opposite direction
- (D) None
of the above
13. The curves that satisfy fundamental law of gearing are,
- (A) Cycloid
- (B) Spiral
- (C) Involute
- (D) Both (A) and
(C) above
14. A rack is a gear with,
- (A) Infinite
number of teeth
- (B) Infinite
module
- (C) Infinite
circular pitch
- (D) None
of the above
15. For 20° full depth involute tooth system, the minimum number of teeth on pinion for avoiding interference is
- (A) 20
- (B) 14
- (C) 17
- (D) 25
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