Mechanical 1

The groove in a shaft for a key is called a __________.

• Keygroove

• Keyseat

• Keyway

• Keyhole

A woodruff key has a __________ shape.

• Half moon

• Rectangular

• Square

• Tapered

When assembling a key in a shaft keyseat, the key __________.

• Should fit into the keyseat without forcing it

• Should be tapped into place with a hammer

• Should be pressed into place using a vise

• Should be cooled and the shaft heated

The power output at a motor's shaft is found by __________.

• Multiplying the torque times the load

• Multiplying the torque times the shaft speed

• Dividing the torque by the load

• Dividing the torque by the shaft speed

Mechanical Power Efficiency is defined as __________.

• The ratio of the Power out to the Power in

• Torque times RPM

• Output torque divided by load

• Load times radius arm

As the torque on an electric motor increases, __________.

• Current (amps) remains constant

• Current increases

• Current decreases

• RPM increases

The function of a machine shaft is to __________.

• Act as a spacer between a motor and a driven shaft

• Support the weight of a motor

• Transmit mechanical power from one location to another

• Act as a heat sink to counteract motor overheating

The three types of loads placed on bearings are __________.

• Radial, coaxial, and transaxial

• Radial, thrust, and combination

• Radial, helical, and transverse

• Radial, reverse, and axial

The two major categories of bearings used in industry are __________.

• Ball and roller

• Ball and journal

• Plain and anti-friction

• Friction and sleeve

Both major categories of shaft bearings can be mounted in one of which two ways?

• Four bolt and two bolt.

• Pillow block and flange

• Single assembly and split assembly

• None of the above