WorksheetsPOE End of Term 2 (Mechanical Efficiency, Pulley, Gears)
Total questions: 38
Worksheet time: 2hrs 52mins
What does this image represent?
A pulley
A wedge
A lever
A wheel and axle
What term is used to describe the object that is being moved by a machine?
pulley
effort
fulcrum
load
What is this part of pulley?
Axle
Groove
Rope
Wheel
What is this part of pulley?
Axle
Groove
Rope
Wheel
What is this part of pulley?
Axle
Groove
Rope
Wheel
Identify the type of pulley seen in the image.
fixed pulley
movable pulley
compound pulley
Identify the type of pulley
Fixed
Moveable
Block and Tackle or pulley system
How do fixed pulleys make work easier?
they change the direction of a force
they change the amount of force required
the distance over which the force is applied
the measurement of an object
Which of the following is a good definition for a pulley?
a simple machine that uses a grooved rope to move a load
a simple machine that uses a rod, fulcrum. load and effort to move things
a simple machine that uses a rope, chain, or belt
Which of the following is an example of a pulley?
flag pole
see saw
jump rope
It's easier to lift heavy objects with a double-pulley system because:
The effort force is twice as much as the resistance force.
The effort force is one-half as much as the resistance force.
The effort force is three times as much as the resistance force.
The resistance force and effort force are equal.
Look at the pulley systems shown here. Which one or one(s) will provide the greatest mechanical advantage?
A and B
B and C
C and D
D and E
Which direction will the driven gear in a meshed (mating) gear train turn if the driver is turning to the right
to the left
to the right
they wont turn
A gear ratio is calculated by which of the following?
Teeth of gear output : teeth of gear input
gear shape input : gear shape output
What is the gear ratio of this setup?
1 : 1
1.4 : 1
0.71 : 1
If we have a gear ratio of 0.5:1, there is increased:
speed
torque
Find the total gear ratio of the given simple gear train? A is the input gear.
5:1
1:2
4:1
3:1
Find the gear ratio of the given simple gear train? A is the input gear.
5:1
0.5:1
4:1
3:1
If you need to move fast, then
use a smaller _______ gear and a larger________ gear.
driver : driven
driven : driver
idler : input
gear train
What do we call the gear connected to the input power source, such as a motor?
Driven Gear
Bigger Gear
Smaller Gear
Driver Gear
Ohms
Watts
Identify this electronic testing tool
GPS Tracker
Jump Wire
Multimeter
Breadboard
What are the main components of a multimeter?
display, temperature detector, and rotating knob
Display, rotating dial, ranges, test probes
Electricity detector, humidity identifier, and resistance scale
Test probes, display, voltage regulator, and ranges
What is a breadboard?
A type of skateboard used for bread delivery
A board game involving bread pieces
A device used for prototyping electronics.
A type of cutting board used for bread
How are components connected on a breadboard?
By screwing them onto the board
By gluing them onto the board
By connecting them with wires outside the board
By inserting their leads into the holes on the board.
What is the advantage of using a breadboard?
Difficult to troubleshoot circuits
Requires specialized tools
Limited space for components
Easy prototyping and testing of electronic circuits without soldering.
