Which of the following information would you need to calculate the gear ratio of a given gear drive system?

• Root diameters of the drive and driven gears.

• Pitch diameter of the drive and driven gears.

• Base diameter of the driver and driven gears.

• Outer diameter of the drive and driven gears.

Which of the following is pitch diameter referring to?

• The actual diameter of each gear shaft.

• The actual diameter of the teeth of the gear.

• The theoretical diameter of the lowest point around the gear.

• The theoretical diameter of the pitch circle of the gear.

A spur gear drive transfers power between:

• Parallel shafts

• Angular shafts

• Perpendicular shafts

• All of the above.

Tags

NGSS.MS-PS2-1

In a four gear system if the second gear is rotating counterclockwise, what direction is the fourth gear turning?

• Clockwise

• To the right

• Counterclockwise

• Cannot determine from the information provided.

In order to calculate the output speed of a gear train one must first determine the gear ratio. Find the Driver to Driven ratio for the figure below;

• 3:1

• 1:3

• 9:1

• 1:9

Which of the following type of gear drive system uses a flat gear?

• Rack and pinion

• Worm gear

• Bevel gear

• Helical gear

A flap tucker mounted on a shaft driven with an 8-inch pitch diameter sprocket, connected by chain to a 2-inch pitch diameter motor sprocket, is rotating at 100 rpm. How fast is the motor turning?

• 25 rpm

• 100 rpm

• 400 rpm

• 800 rpm

Which of the following is part of a high torque synchronous or timing belt drive system?

• A v-belt on a flat pulley

• A toothed belt on a flat pulley

• A flat belt on a toothed pulley

• A toothed belt on a toothed pulley.

Which of the following instruments gives superior results when used to align couplers?

• A dial Indicator

• A tape measure

• A level indicator

• A straightedge

Which of the following is a method used to allow for the effect of thermal expansion of mechanical couplings used on motor drives?

• Brass shims around the shaft.

• Felt padding glued to the shaft.

• Small gaps between the shaft faces.

• Coolant fluids dripped on the components.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2