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Mechanical Drives 3 Advanced Gear Drives

Total questions: 24

Worksheet time: 12mins

Name
Class
Date
1.

A _________ gear is similar to a spur gear except that its teeth are cut at an angle to the gear’s axis. Pg 312

a)

Worm

b)

Miter

c)

Helical

d)

Bevel

2.

A bevel gear with offset teeth is called a _____________ bevel gear.

a)

Plain

b)

Spiral

c)

Zerol

d)

Hypoid

3.

The oil is drained from a speed reducer through its _______________.

a)

Output shaft

b)

Input shaft

c)

Bearing carrier

d)

Vent plug

4.

A bevel gear with straight teeth is called a ____________ bevel gear Pg 312

a)

Hypoid

b)

Spiral

c)

Plain

d)

Zerol

5.

Helical gears can be used in both parallel-axis and ___________ gear drive systems

a)

Right-angle

b)

Non-intersecting axis

c)

Any angle

d)

All of the answers are correct

6.

When installing a parallel-axis helical gear drive system, you must position the shafts so there is little _______ in the gears Pg 306

a)

Misalignment

b)

Backlash

c)

Wear

d)

Overlap

7.

The ________ is used to determine the output speed and torque of a work gear speed reducer.

a)

Gear gauge

b)

Gear ratio

c)

Pressure angle

d)

Helix angle

8.

In the worm gear speed reducer, special bearings are needed to support the _______ created by the drive Pg 330

a)

Axial thrust

b)

Radial load

c)

Radial inertia

d)

High friction

9.

When installing a right angle bevel gear drive system, because you have adjusted the mounting distance of the gears there is no need to adjust the ______ of the gears

a)

Overlap

b)

Mesh

c)

Backlash

d)

Lubrication

10.

When installing a parallel-axis helical gear drive system, you must position the shafts so there is little ______________ in the gears.

a)

Misalignment

b)

Backlash

c)

Wear

d)

Overlap

11.

A bevel gear with helical teeth is called a ______ bevel gear. Pg 313

a)

Spiral

b)

Zerol

c)

Hypoid

d)

Plain

12.

A right angle drive is one whose shafts lie ________ degrees from each other Pg 308

a)

45

b)

60

c)

30

d)

90

13.

The angle at which helical gear teeth are cut is called the ______________________

a)

Pressure angle

b)

Inclination

c)

Right angle

d)

Helix angle

14.

There are ________ maintenance steps for speed reducers Pg 338

a)

2

b)

3

c)

4

d)

5

15.

A right-angle drive whose shafts are not in the same plane is a(n) ______ axis drive. Pg 310

a)

Multiple

b)

Non-intersecting

c)

Single

d)

Intersecting

16.

How many input shafts can a multiple-reduction speed reducer have? Pg 326

a)

1

b)

2

c)

3

d)

4 or more

17.

Special bearing and shaft mounting equipment must be used with helical gear drives due to the ___________________ created by the gear drive.

a)

End play

b)

Radial load

c)

End thrust

d)

Axial drive

18.

If helical drives are to be used in a right angle drive, they must have 45-degree helix angles of _________________ handedness.

a)

Identical

b)

Opposite

c)

Intersecting

d)

Non-intersecting

19.

Gears that have two sets of opposing teeth cut into there face are called double helix or _____________- gears

a)

Balloon

b)

Trout

c)

Herringbone

d)

Hypoid

20.

A single-reduction ____________________ speed reducer is capable of providing high reduction ratios and always comes in a right angle drive.

a)

Helical gear

b)

Herringbone gear

c)

Worm gear

d)

Zerol gear

21.

A speed reducer is sometimes called a(n) _______________ gearbox

a)

Induction

b)

Reduction

c)

Conduction

d)

Brake

22.

A worm gear speed reducer is compose of a worm gear and a(n) _________________-

a)

Pinion

b)

Crown

c)

Worm

d)

Fishing hook

23.

A triple reduction speed reducer has ____________- internal gear drives

a)

1

b)

2

c)

4

d)

3

24.

_________________ is the name of the procedure to align the worm gear with the worm.

a)

Aligning

b)

Calibrating

c)

Bluing

d)

Tincture