Telescopic Core Review

Question 1

When lifting off the main boom how is the effective weight of the fly/jib different in the erected position of that of the stowed position

Answer 1

Effective weight increase

Question 2

Who must determine maximum speed for a mobile crane to travel with a suspended load

Answer 2

the competent person

Question 3

How does the effective weight of a stowed extension relate to the actual weight of the extension

Answer 3

lower than the actual weight

Question 4

Using a telescopic mobile crane and lifting off of the jib with the main boom partially extended, you should use ______ to determine gross capacity

Answer 4

Boom Angle

Question 5

If not listed in the load/capacity chart or notes for a telescopic boom crane and you are in between boom lengths, you should

Answer 5

Use the lowest shorter or longer

Question 6

Which of the following is required to be on mobile telescopic boom crane in order to lift a personnel platform

Answer 6

Boom length indicator

Question 7

When operating a rough terrain crane and extending the outrigger beams from the cab you should

Answer 7

make visual contact with beam and jack

Question 8

When a mobile cranes telescopic boom sections are required to be extended equally and they are not, the effect could be which of the following

Answer 8

Damage to the longest extended section

Question 9

What item listed below can be removed from a carry deck mobile crane, and continue to be operation

Answer 9

Jib/fly/extension

Question 10

What is the primary reason for lifting off a boom extension mounted on a mobile telescopic boom crane

Answer 10

increase height

Question 11

Traveling a rear engine mounted rough terrain mobile crane, with a suspended load you should position the load

Answer 11

over the front quardrant

Question 12

A telescopic mobile crane is equipped with an anti two block lock out device, When the device is activated which functions will be disabled

Answer 12

Hoist, extend and lower the boom

Question 13

What device listed below is NOT required on telescopic boom mobile cranes manufactured today

Answer 13

Swing path monitor

Question 14

Backward stability on a rough terrain mobile crane could be a problem when configured in which situation below

Answer 14

Over the side at a minimum radius

Question 15

A telescopic boom mobile crane is going to lift a personnel platform, what is required from the list below to be operational on the crane

Answer 15

Controlled load lowering

Question 16

Which boom configuration can cause the most hazardous boom side loading condition

Answer 16

Long boom with minimum radius

Question 17

According to OSHA when is it safe to hoist loads with a mobile crane below energized power lines

Answer 17

If fully extended boom cant reach the prohibited zone

Question 18

A crane loses stability when it leverage on the load is

Answer 18

Less than the load’s leverage on the crane

Question 19

What is the design factor when using non rotating wire rope slings and lifting personnel in a platform suspended from a mobile crane

Answer 19

10

Question 20

When should a tag line be used, during the hoisting of material

Answer 20

When the rotation of the load would be dangerous

Question 21

When taking a lift on outriggers, the maximum ground bearing pressure occurs in which boom position

Answer 21

over the corner

Question 22

A mobile crane’s jib is off set 15 versus it original 30 offset, but the boom angle remains unchanged. In this situation, the load radius would

Answer 22

decrease

Question 23

blocking or mats under the outrigger pads/floats shall be

Answer 23

sustain load and maintain stability

Question 24

when a telescopic boom extension is offset from the main boom, the crane’s capacity normally will be

Answer 24

reduced

Question 25

on mobile cranes the boom angle indicator indicates what to the operator

Answer 25

angle of boom to horizontal

Question 26

if working near power lines and using a tag line, which type of rope is least conductive to electricity

Answer 26

polyproplene

Question 27

which of the following regulations listed below governs the lifting of personnel with a mobile crane in construction

Answer 27

OSHA 1926.1431

Question 28

Backward stability of a mobile crane is tested in which configuration listed below

Answer 28

Basic boom at maximum angle with no load

Question 29

On mobile truck cranes operating with outriggers retracted, the least stable position is when the boom is directly over the

Answer 29

side

Question 30

When a rough terrain crane, is working on tires, backward tipping is most likely to occur when lifting which configuration

Answer 30

side quadrant at a short radius

Question 31

when traveling a rough terrain mobile crane with a suspended load, which of the following is the most important consideration

Answer 31

boom low as possible with load close to the surface

Question 32

when retracting the boom on a telescopic mobile crane. the hook block and load will move in what direction

Answer 32

down

Question 33

Rough terrain mobile crane capacities are generally greater over the

Answer 33

front

Question 34

mobile truck crane capacities are generally greater over the

Answer 34

rear