DSIC Tech 8

1.            Which of the following materials cannot be used to make belts?

• Glass

• Leather

• Rubber

• canvass

The force that upholds tightness between the belt and the shaft is

• Motion

• Liquid

• Friction

• heat

The image shown above in FIG. 1 is that of a

• Gear drive

• Belt drive

• Negative drive

• Positive drive

In FIG. 1, if the shaft rotates clockwise, the wheel rotates

• Perpendicular

• Parallel

• Clockwise

• Anticlockwise

Chain drives are not applicable in which of the following systems?

• Bicycle

• Motor bikes

• Bulldozer tracks

• Sewing machine

The mage shown above in FIG. 2 is that of

• Filter belt

• Open belt

• V – belt.

• Crossed belt

In FIG. 2, if the wheel A rotates anticlockwise, the wheel B will rotates

• Perpendicular

• Parallel

• Clockwise

• Anticlockwise

The image shown above as FIG. 3 is that of a ________________________

• V – belt

• Open belt

• Combination belt

• Crossed belt

In FIG. 5, the four forces that act on the aircraft respectively named as A, B, C and D are

• Lift, Drag, Thrust, and Weight

• Weight, Drag, Trust and Lift

• Trust, Weight, Drag and Lift

• Thrust, Lift, Weight, and Drag

The force A is provided by the

• Air pressure

• Engine

• Weight

• Friction