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Simple machines questions

Simple machines questions | form two Physics

Find Simple machines examination questions, form two Physics in acaproso.com

# Question
1

A lever which has its fulcrum between the effort and the load is said to be of

  1. first class
  2. second class
  3. third class
  4. no class

Multiple choices
2

The principle of fluid of pressure which is used in hydraulic press is the

  1. pressure is the same level at all level in a fluid
  2. increase of pressure are transmitted equally to all part of the fluid
  3. increase of pressure can only be transmitted through solid
  4. pressure at a point act equally

Multiple choices
3

Define Moment of force


Short answers
4

Define the following terms as applied to machines:
(i) Load
(ii) Effort
(iii) Efficiency


Short answers
5

A load of 500 N is raised through 5 m by a machine when its effort moves simultaneously though a distance of 25 m. If the efficiency of the machine is 80%, calculate its mechanical advantage.


Mathematical Calculation
6

Presence of friction in a machine:
A. causes proper functioning of the machine
B. increases efficiency of the machine
C. increases life time of the machine
D. reduces efficiency of the machine


Multiple choices
7

The effort that would be needed to operate a 1200N load with a mchine that has a mechanical advantage of 3 is:
A. 400N
B. 600N
C. 800N
D. 3600N


Multiple choices
8

The efficiency of a machine is always less than 100% because ______


Fill in blanks
9

In a three pulley system the Velocity Ratio (VR) is given as:
A. 3
B. 6
C. 1/6
D. 1/3


Multiple choices
10

b) A rigid body which when in use turns about a pivot or fulcrum is called a ____________.
c) A grooved wheel which is free to turn about an axle fixed in a frame is called a _______


Fill in blanks