Related Questions

In helical gears, the distance between similar faces of adjacent teeth along a helix on the pitch cylinders normal to the teeth, is called
A normal pitch
B axial pitch
C diametral pitch
D module
A certain dentist specializes in implanting gold and silver teeth in his patients mouths .He charges $ 650 for a gold tooth an $ 325. for a silver tooth. If his told fees for implanting gold and silver teeth last week were $ 15, 925 in total and he implanted five more gold teeth that silver teeth, how many teeth in total did he implant over the week?
A 33
B 32
C 31
D 34
If T is the actual number of teeth on a helical gear and $$\varphi $$ is the helix angle for the teeth, then formative number of teeth is written as
A $${\text{T}}{\sec ^3}\varphi $$
B $${\text{T}}{\sec ^2}\varphi $$
C $$\frac{{\text{T}}}{{{{\sec }^3}\varphi }}$$
D $${\text{Tcosec}}\varphi $$
The two parallel and coplanar shafts are connected by gears having teeth parallel to the axis of the shaft. This arrangement is known as
A Spur gearing
B Helical gearing
C Bevel gearing
D Spiral gearing
Two advantages of using helical gears rather than spur gears in a transmission system are
A Strength and cost
B Strength and less end thrust
C Noise level and strength
D Noise level and economy
Four usual dice are thrown on the ground. The total of numbers on the top faces of these four dice is 13 as the top faces showed 4, 3, 1 and 5 respectively. What is the total of the faces touching the ground?
A 12
B 13
C 15
D Cannot be determined
A close coil helical spring when subjected to a moment M having its axis along the axis of the helix
A It is subjected to pure bending
B Its mean diameter will decrease
C Its number of coils will increase
D All the above
In order to have a connecting rod equally strong in buckling about X-axis and Y-axis, the moment of inertia about X-axis should be __________ the moment of inertia about Y-axis.
A Equal to
B Twice
C Three times
D Four times
If the centre distance of the mating gears having involute teeth is increased, then the pressure angle
A increases
B decreases
C remains unchanged
D none of the mentioned
If the centre distance of the mating gears having involute teeth is varied within limits, the velocity ratio
A Increases
B Decreases
C Remains unchanged
D None of these

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