MSSC Maintenance - Review 1

What is the minimum distance an oxygen cylinder should be stored from flammable materials?

• 10

• 15

• 25

• 35

The primary purpose of a switch is to __________.

• reduce overall voltage levels

• re-energize or de-energize a circuit

• control logic

• momentarily interrupted flow of current

The measure of energy consumed by a circuit is called __________.

• Power

• Voltage

• Current

• Joule

Which of the following is an advantage of a circuit breaker over a fuse?

• Cheaper

• Easier to replace

• Disposable

• Can be reset

A circuit breaker connected to the powerline feeding a motor keeps tripping even after the motor is disconnected. What is the most likely issue?

• Motor is overloading

• Circuit breaker is defective

• Ground incorrectly wired

• Wrong voltage

__________ are used to remove undissolved contaminates in hydraulic fluid.

• Magnets

• Filters

• Baffles

• Strainers

A sight glass is used to do what?

• Inspect hydraulic fluid for dirt/debris

• Inspect metal for microfractures

• Inspect solders and welds

• Other

The dirt amount collected by a filter when pressure reaches a predetermined point is called the

• Back pressure limit

• Dirt Holding Capacity

• Filter limit

• Hydraulic pressure limit

In the United States, oil viscosity is measured in __________.

• Saybolt Universal Seconds

• gallons per hour

• liters per millisecond

• Viscounts

In machine automation, Which of the following is not a component of a relay?

• coil

• contacts

• valve

• spring