MSSC MAINTENANCE AWARENESS EXAM 2023-2024 ACTUAL EXAM 300 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS)|AGRADE

MSSC MAINTENANCE AWARENESS EXAM 2023-2024

ACTUAL EXAM 300 QUESTIONS AND CORRECT DETAILED

ANSWERS WITH RATIONALES (VERIFIED

ANSWERS)|AGRADE

Because of its design, an offset chain does not require a connecting link.

For this reason, it is normally used in? - ANSWER- Heavy load and low

speed applications

Multiple strand chains are used? - ANSWER- To transmit a great deal of

power

Compared to a V-belt drive, a chain drive? - ANSWER- Is more

efficient

In the process of installing a chain drive system, the motor and driven

component should be checked for a soft foot condition and excessive

run-out. The shaft run-out should be no more than? - ANSWER- 0.002

Chain sag is measured by rotating the sprockets so there is little or no

chain sag in the _____ side and measuring the sag in the _____ side. -

ANSWER- Taut, slack

A chain should be replaced when its length becomes _____ longer than

the original length. - ANSWER- 3%

Chain sag is measured? - ANSWER- Midway between the sprockets

A special link used to reconnect a chain is called a _____ link. -

ANSWER- Master

A chain puller is a tool used to hold two ends of a chain together while

the? - ANSWER- Master link is installed

When using a chain puller, the jaws are opened and closed by? -

ANSWER- A dial on top of the tool

The three components for a belt drive system are? - ANSWER- Belt,

driver sheave, driven sheave

Pitch is defined as the distance between a point and a? - ANSWERSimilar corresponding point

The pitch circle of a belt drive is? - ANSWER- The place in the belt

which represents the center of the force being transmitted by the belt

A belt drive having a 12 inch driver pulley and a 6 inch driven pulley

has a pulley ratio of? - ANSWER- 0.5

In the calculation of shaft speed and shaft torques of a belt drive system,

which of the following applies? - ANSWER- Shaft speeds are inversely

proportional to pitch diameters

The driven pulley in the belt drive system show is rotating at _____ rpm.

- ANSWER- 1200

One important characteristic of a timing belt is? - ANSWER- It will not

slip during operation

The fractional horsepower (FHP) V-belt, also called a light duty belt is

designed for low power application below _____ Hp. - ANSWER- 7.5

The V-belt should ride _____ in the groove with its top near the top of

the sheave; the V-belt does not touch the _____ of the sheave. -

ANSWER- High, bottom

A _____ should be used to check for sheave groove wear. - ANSWERSheave gauge

The maximum allowable deflection force on a belt is _____ than the

minimum deflection force. - ANSWER- 50% greater

Belt span is defined as the? - ANSWER- Distance between the points on

the sheaves where the belt touches each sheave

The most basic way to test the tension of a belt is to? - ANSWER- Your

sense of touch

When connecting a 3-phase motor the three lines (T1,T2 and T3) are

usually connected to __________. - ANSWER- - L1, L2, and L3

Electricians use __________ to prevent damage to electrical wiring

running to the machine. - ANSWER- - rigid and flexible conduit

When the wire or foil strip inside a fuse melts, the fuse is said to be

__________. - ANSWER- - blown

The difference between a fuse and a circuit breaker is __________. -

ANSWER- - circuit breakers can be reset and used again

The amount two electrical waveforms are out of phase is measured in

__________. - ANSWER- - degrees

The type of overload protection that protects the motor by disconnecting

it physically instead of electrically is a(n) __________. - ANSWER- -

overload clutch

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

- ANSWER- - Can be reset

*T or F

The minimum number of sets of contacts a motor starter has depends on

the number of power leads the motor requires. - ANSWER- - True