MD 8 Gears Pt.4

Helix angle in the range of _____ degree is recommended for wide-face helical gears.

• less than 15

• 20 to 35

• less than 20

• 20 to 22

Ideal herringbone gear helix is in the range of _____.

• 30 to 45

• 25 to 30

• 35 to 50

• 15 to 20

The lack of backlash in a spur gear design/operation may result to _____.

• overloading

• jamming

• overheating

• all of these

In double helical gears the helix angle may be made up to ____

• 75 deg

• 30 deg

• 60 deg

• 45 deg

Ratio of the angle of action to the pitch angle.

• contact ratio

• ratio of gearing

• approach ratio

• module

In the interest of design simplification and good kinematic compromise bevel gears adopted a standard pressure angle of _____ degrees.

• 141/2 involute full depth

• 171/2

The normal helix angles in helical gear is recommended in the range of _____ degrees.

• less than 18

• 15 to 25

• 20 to 35

• 20 to 30

A toothed wheel whose tooth elements are straight and parallel to the shaft axis or used to transmit motion and power between parallel shafts.

• helical hear

• spur gear

• worm gear

• bevel gear

Plane of rotation is defined as plane perpendicular to _____.

• gear axis

• gear ratio

• normal plane

• pitch diameter

The amount by which the dedendum in a given gear/opinion exceeds the addendum of its mating pinion/gear. Also the radial distance between the top of a tooth and the bottom of the mating tooth space.

• tip relief

• top land

• clearance

• space