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TEST 20

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.

Which type of gear is a cylinder, wheel or disk on the surface of which is cut parallel teeth?

a)

Bevel gear

b)

Helical gear

c)

Spur gear

d)

Worm gear

2.

Which type of gear has a ratio of 1:1?

a)

Herringbone gears

b)

Miter gear

c)

Internal gear

d)

Spur gear

3.

The distance between similar sides of adjacent teeth measured on the pitch line is called:

a)

Diametral pitch

b)

Linear pitch

c)

Circular pitch

d)

Axial pitch

4.

In rack gear, circular pitch is called:

a)

Linear pitch

b)

Base pitch

c)

Diametral pitch

d)

Axial pitch

5.

__________ is equal to twice the addendum.

a)

Tooth flank

b)

Tooth thickness

c)

Whole depth

d)

Working depth

6.

The meaning of module in a gearing system is:

a)

Distance

b)

Addendum

c)

Measure

7.

Refers to the portion of the tooth surface adjacent to the involute lying inside a radial line passing through an imaginary intersection of the involute and the base circle.

a)

Over cut

b)

Under cut

c)

Tip relief

d)

None of these

8.

In a pair of gears, spur or bevel, the smaller is often called:

a)

Rack

b)

Pinion

c)

Worn

d)

Idler

9.

Which of the following gears that are of the same and transmit motion at right angles?

a)

Herringbone gears

b)

Spur gears

c)

Miter gears

d)

Rack gears

10.

The cone, which represents in bevel gears the original friction surfaces are called

a)

Back cone

b)

Length of cone

c)

Pitch cones

d)

Cone distance

11.

Which of the following angles equal the pitch angle?

a)

Back angle

b)

Front angle

c)

Face angle

d)

Root angle

12.

The surface between the flanks of adjacent teeth.

a)

Top land

b)

Tooth flank

c)

Tooth face

d)

Bottom land

13.

The portion of the common tangent to the base circles along which contact between mating involutes occurs.

a)

Line of action

b)

Pitch line

c)

Arc of action

d)

Angle of action

14.

The intersection between the axes of the line of centers and the common tangent to the base circles,

a)

Pitch line

b)

Pitch circle

c)

Pitch point

d)

Pitch surface

15.

The angle between the element of the face cone and its axis.

a)

Face angle

b)

Back angle

c)

Front angle

d)

Increment angle

16.

Refers to a portion of the small end of the tooth.

a)

Heel

b)

Toe

c)

Sole

d)

Corner

17.

The apex of the pitch cone.

a)

Cone vertex

b)

Cone distance

c)

Cone radius

d)

Cone center

18.

Gear pump used in hydraulic system are used for:

a)

Low and medium pressure

b)

Medium and high pressure

c)

Low and high pressure

d)

Medium and not high pressure

19.

In machine tool drive, the modulus for gears is usually selected between:

a)

10 ≥ μ ≥ 1

b)

2 ≥ μ 1

c)

20 ≥ μ ≥ 1

d)

5 ≥ μ ≥ 1

20.

The shape of the curve on the side of gear is termed as:

a)

Stub

b)

Involute

c)

Trochoid

d)

Cycloid

21.

The distance in a straight line from one side of a tooth to the side at points where the pitch circle passes through the tooth.

a)

Circular pitch

b)

Pitch

c)

Chordal thickness

d)

Tooth length

22.

The _______ of a bevel gear is equal to the altitude of the pitch cone.

a)

Length of cone

b)

Vertex distance

c)

Length of hub

d)

Thickness

23.

The _______ of a worm is the distance between the center of one tooth and the center of an adjacent tooth, measured perpendicular to the teeth.

a)

Diametral pitch

b)

Circular pitch

c)

Axial pitch

d)

Normal pitch

24.

The _______ of a worm gear is the concave surface of the gear tooth.

a)

Radius

b)

Throat

c)

Pitch

d)

Addendum

25.

A type of gear, which is used for heavy duty work where a large ratio of speed is required.

a)

Worm gear

b)

Bevel gear

c)

Spur gear

d)

Miter gear

26.

A _________ is a cylinder with teeth resembling those of acme thread.

a)

Pinion

b)

Spur

c)

Worm

d)

Bolt

27.

The _________ is the angle at which the teeth of a helical gear are slanted across the face of the gear.

a)

Lead angle

b)

Helix angle

c)

Pressure angle

d)

Pitch angle

28.

A __________ is one thicker in proportion to its length than the involute tooth.

a)

Hypoid

b)

Hypoid

c)

Stub tooth

d)

Spiral

29.

Which gears are used to connect parallel shafts lying in the same plane?

a)

Worm gears

b)

Bevel gears

c)

Herringbone gears

d)

Spiral gears

30.

Which of the following is used to connect the shafts at an angle but lying in the same plane?

a)

Helical gears

b)

Worm and worm wheel

c)

Spur gears

d)

Herringbone gears

31.

The product of circular pitch and diametral pitch is:

a)

b)

π

c)

3 π

d)

4 π

32.

A line drawn through all the points at which the teeth touch each other.

a)

Angle of contact

b)

Arc of contact

c)

Path of contact

d)

Arc of approach

33.

The length of the gear tooth measured along an element of the pitch surface is called:

a)

Acting flank

b)

Face width

c)

Flank of the tooth

d)

Tooth space

34.

The ________ is equal to the tooth thickness plus the space width.

a)

Normal pitch

b)

Axial pitch

c)

Diametral pitch

d)

Circular pitch

35.

The _________ is the arc of the pitch circle where the tooth profile cuts the pitch circle when a pair of teeth first comes in contact until they are in contact as the pitch point.

a)

Arc of recess

b)

Arc of approach

c)

Arc of contact

d)

Arc of action

36.

The _________ traced by the outermost corner of one tooth on the plane of the other gear.

a)

Cycloid

b)

Hypocycloid

c)

Epitrochoid

d)

Trochoid

37.

An imaginary circle passing through the points at which the tooth of the meshing gears contact each other.

a)

Pitch circle

b)

Base circle

c)

Addendum circle

d)

Dedendum circle

38.

A gear with teeth on the outer cylindrical surface.

a)

Rack gear

b)

Zerol gear

c)

Miter gear

d)

External gear

39.

The diameter of a circle coinciding with the top of the teeth of an internal gear.

a)

Dedendum diameter

b)

Pitch diameter

c)

Base diameter

d)

Internal diameter

40.

It is standard practice to assume that the thickness of the tooth measured sound the pitch circle is exactly ________ the circle path.

a)

One half

b)

One third

c)

One fourth

d)

One fifth

41.

The helix angles for the herringbone gears are used from ______for industrial gears.

a)

10 to 15

b)

15 to 20

c)

20 to 30

d)

25 to 45

42.

The distance parallel to the axis from the pitch circle to the face of the shoulder or hub.

a)

Back one

b)

Backing

c)

Crown height

d)

Apex distance

43.

A machine that makes gear teeth by means of a reciprocating cutter that rotates slowly with the work.

a)

Gear forming

b)

Gear hobber

c)

Gear shaper

d)

Gear cutter

44.

A type of gear wheels connecting non-parallel, non-intersecting shafts usually at right angles.

a)

Helical gear

b)

Herringbone gear

c)

Hypoid gear

d)

Bevel gear

45.

The angle between the plane of the pitch circle and a plane tangent to the end of the tooth.

a)

Foot angle

b)

Back angle

c)

Dedendum angle

d)

Face angle

46.

The circle containing the bottoms of the tooth spaces.

a)

Root circle

b)

Working depth circle

c)

Base circle

d)

Pitch circle

47.

The depth of the tooth inside of the pitch line is called:

a)

Working depth

b)

Dedendum

c)

Total depth

d)

Whole depth

48.

The amount by which the dedendum in a given gear exceeds the addendum of its mating gear.

a)

Whole depth

b)

Clearance

c)

Backish

d)

Working depth

49.

The outside diameter of the worm measured on the central plane.

a)

Dedendum diameter

b)

Addendum diameter

c)

Throat diameter

d)

Pitch diameter

50.

The circle from which the involute is generated.

a)

Base circle

b)

Pitch circle

c)

Working depth circle

d)

Addendum circle