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PMMI REVIEW - Chain Drives

Total questions: 28

Worksheet time: 14mins

Name
Class
Date
1.

Describe the function of the three basic components of a chain drive?

a)
Motor, battery, and controller
b)
Shaft, bearing, and lubricant
c)
Gears, belt, and pulley
d)

Sprockets, chain, and tensioner/idler

2.

Describe how to calculate sprocket ratio

a)

Driver Sprocket Teeth + Driven Sprocket Teeth

b)

Driver Sprocket Teeth * Driven Sprocket Teeth

c)

Driven Sprocket Teeth / Driver Sprocket Teeth

d)

Driver Sprocket Teeth / Driven Sprocket Teeth

3.

What type of chain drive is made up of alternate roller links?

a)
Roller chain
b)
Gear chain
c)
Sprocket chain
d)
Belt chain
4.

What are the three basic functions of a chain drive system?

a)
Transmitting power, changing direction, transferring motion
b)
Absorbing shock, providing stability, preventing wear
c)
Lubricating gears, reducing friction, increasing efficiency
d)
Generating electricity, storing power, controlling speed
5.

Define Chain Pitch?

a)
Distance between the centers of adjacent sprockets in a roller chain
b)
Distance between the centers of adjacent rollers in a roller chain
c)
Length of the roller in a roller chain
d)
Width of the roller in a roller chain
6.

What is the pitch of a standard Number 40 chain?

a)
0.75 inches
b)
0.5 inches
c)
1 inch
d)
0.25 inches
7.

Examine the picture. This type of link is made up of two side plates, two bushings, and two rollers. What is the name of this link?

a)
bushing chain link
b)
plate chain link
c)
roller plate link
d)
roller chain link
8.

Roller chain links are used when there is an even number of links. What type of link is used when there is an odd number of links?

a)

Odd link

b)

Offset link

c)
Super link
d)
Ultra link
9.

what is the name of roller chain link that is removable?

a)
removable link
b)
separated link
c)
master link
d)
detachable link
10.

Describe the function and operation of a master chain link?

a)
A master chain link is a small and fragile chain link used for lightweight connections.
b)
A master chain link is a type of lock used to secure bicycles.
c)
A master chain link is a digital tool for managing social media accounts.
d)
A master chain link is a larger and stronger chain link used for secure connections, and its operation involves opening, attaching, and closing the link.
11.

Examine the picture. What type of chain is this?

a)
Bicycle chain
b)
Roller chain
c)

Detachable chain

d)
Timing chain
12.

This type of chain is designed for one-way drives where a steady pull is applied on the load side

a)

Detachable Chain

b)
Pulley Chain
c)
Belt Chain
d)
Gear Chain
13.

This type of chain is used as a drive chain for higher speeds (to about 450 FPM or 137 meters/minutes) and heavier loads than detachable chain

a)
roller chain
b)
sprocket chain
c)

Pintle chain

d)
leaf chain
14.

What is the name of the drive chain that consists of a series of toothed link-plates assembled on pin connectors?

a)
belt chain
b)
sprocket chain
c)
gear chain
d)

Silent chain

15.

Silent chains are commonly used for high speed drive systems over how many FPM?

a)
3000
b)
10000
c)
7000
d)

4500

16.

Define Chain sag in a mechanical drive system?

a)
The material used to manufacture the chain
b)
The tension in the chain due to external forces
c)
The speed at which the chain moves between sprockets
d)
Amount of slack or droop in the chain between the sprockets due to its own weight.
17.

How is Chain Sag measured in a sprocket driven system?

a)
By observing the color of the chain
b)
By applying a force perpendicular to the chain at the midpoint between two sprockets and measuring the vertical distance between the chain and a straight edge placed under it.
c)
By counting the number of teeth on the chain
d)
By measuring the circumference of the sprockets
18.

What is the name of the tool that is used to hold two ends of a chain together while installing a sprocket?

a)
Chain separator tool
b)
Sprocket connector tool
c)
Link fastener tool
d)

Chain puller tool

19.

For most applications, a chain should be installed with a sag depth of ______ % of the sprocket center distance?

a)

5-8%

b)

2-4%

c)
10-12%
d)
15-18%
20.

Roller chain sprockets are hardened. This provides what?

a)

Increased durability and resistance to wear.

b)
Reduced resistance to wear
c)
Decreased durability and increased wear
d)
No impact on durability or wear resistance
21.

How many types of sprocket hubs classes are there?

a)
3
b)
4
c)
2
d)
5
22.

Define the type A sprocket hub.

a)

Type A sprocket hub is a hub used in aviation

b)

Type A is a hub with no keyway or set screws

c)

Type A is a flat sprocket with no hub on either side of the plate

d)

Type A sprocket has one hub.

23.

Define the Type B sprocket classification

a)
Type B sprockets are classified based on their design for use with standard roller chains and having a hub on one side.
b)
Type B sprockets are designed for use with bicycle chains
c)
Type B sprockets have a hub on both sides
d)
Type B sprockets are classified based on their use with conveyor belts
24.

Define the Type C sprocket Classification?

a)
Type C sprocket Classification is based on the number of teeth they have.
b)
Type C sprocket Classification is based on their color.
c)

Type C sprocket Classification has a hub on both sides of the plate

d)
Type C sprocket Classification is based on the material they are made of.
25.

Define type D sprocket classification?

a)

Type D sprockets have a split hub for easy replacement.

b)
Type D sprockets are only suitable for heavy machinery.
c)

Type D sprockets have larger hubs for more power.

d)
Type D sprockets are designed for double-strand roller chains.
26.

What are the four most common methods to lubricate chains?

a)

splash lubrication, fast lubrication, power lubrication, spray lubrication

b)

Drip lubrication, Manual lubrication, Oil Bath lubrication, Force Fed lubrication

c)

Robotic lubrication, Auto lubrication, submerge lubrication

d)

No lubrication is needed

27.

A _____ oiler drips oil into the space between the chain's inner and outer plates.

a)

Drip

b)
grease
c)
lubrication
d)
water
28.

A tube delivers a constant supply of oil to the chain, is what type of lubrication method?

a)
Random lubrication
b)
Periodic lubrication
c)

Manual

d)

Forced-Feed