Physics (JSS 2) Mid-term test

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Welcome to your Physics (JSS 2) Mid-term test

1. Types of lubricant are as follows, EXCEPT

2. One of the advantages of friction is

3. Friction is a ________ force

4. The following are types of belt, EXCEPT

5. Chain drive are made up of

6. Regarding the similarities of belt and chain drive ONLY ONE is true

7. One of these is not the properties of a gear

8. Lubricant oil used for gear is also known as

9. A screw is a type of fasterner characterized by a helical ridge known as ________

10.Two classes of machine are :

Subjective (Answer All)

1. Another name for fulcrum is __________

2. Another way to say classes of lever is ___________

3. Friction that occurs in layers of a fluid is known as ________

4. The arrangements of two or more gears in a shaft to transmit motion is called ________ while the engagement of gear is called (5.)__________

Theory (Answer Any Two (2) question)

1a. Define Gear

1b. State four types of gear

1c. List two uses of Gear

2. State and explain any three(3) types of simple machine with one use each

3a. Enumerate how the following methods can reduce friction: (i) Use of lubricants (ii) Design Modification

3b. Calculate the gear ratio if a gear with 16 teeth is used to drive a gear with 24 teeth.

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