S3 Engineering Science (Before Feb Hols)

Motion that moves backwards and forwards in a straight line is called.....

• Linear Motion

• Oscillating Motion

• Rotary Motion

• Reciprocating Motion

How many tonnes of concrete were used in the construction of the Queensferry Crossing?

• 75,000

• 100,000

• 150,000

• 200,000

Calculate the VR of this system.

• 0.05 rev/min

• 0.05

• 200 rev/min

• 200

Calculate the Torque required if the forced used is 55N and the radius of the tool is 25mm.

• 1375 Nmm

• 1375 Nm

• 2.2 Nm

• 2.2 Nmm

Calculate the number of teeth on gear C. A=20, B=60, D=80, In speed=100, out speed= 4.2

• 10

• 20

• 30

• 35

The Golden Gate Bridge is 2737 meters in length. KitKats are 9cm in length. How many KitKats would span the length of the Golden Gate Bridge?

• 304

• 3,041

• 30,411

• 304,111

How can friction be reduced in a mechanical system? (select more than 1)

• Lubrication

• Idler Gear

• Bearings

• Worm Gear

Name this type of gear

• Worm and Wheel

• Bevel Edged Gears

• Idler Gears

• Worm and Nut

What is the record for the furthest flight of a paper airplane?

• 69.14m

• 79.14m

• 83.14m

• 89.14m

What type of mechanism could be used to turn rotational motion into linear motion.

• Worm and Wheel

• Rack and Pinion

• Bevel Edged Gears

• Gear Train