Exam
NCCCO MOBILE CRANE EXAM/99
QUESTIONS AND ANSWERS
(CRANE PRACTICE TESTS)
When using hand signals to direct a crane operator, an extended arm with the thumb
vertical and the fingers opening and closing into a fist indicates: - ANSWER ✓✓✓raise
boom and lower the load
Two closed fists with both thumbs pointing toward each other is the signal for: -
ANSWER ✓✓✓retract hydraulic boom
Which of the following is not a permitted use of an "operational aid"? - ANSWER ✓✓✓
used to test weigh a load prior to hoisting
T or F
Any crane component can be used on any other crane made by the same company -
ANSWER ✓✓✓false
A rough terrain crane is commonly referred to as; - ANSWER ✓✓✓cherry picker
Which of these conditions could be dangerous when operating a crane around a newly
constructed building? - ANSWER ✓✓✓uncompacted soil
When hoisting on outriggers with a permitted 360 degree swing, which position is the
most hazardous in most conditions? - ANSWER ✓✓✓over corner
T or F
The ground pressure under the outriggers is higher than it is under a crawler track
because of the smaller bearing surface - ANSWER ✓✓✓True
An outrigger float should be approximately how much larger that the outrigger pad? -
ANSWER ✓✓✓3 times
, When setting a a crawler crane for use on a new site, which of the following is not
required prior to use? - ANSWER ✓✓✓name of the person that will operate the crane
Where should the slings be attached when lifting lattice boom sections? - ANSWER ✓
✓✓use the end connections
T or F
During crane assembly, the counterweight is mounted after the installation of the
complete boom - ANSWER ✓✓✓false
When assembling lattice boom sections, which set of pins are installed first? - ANSWER
✓✓✓both upper
When installing the boom pins, the pin should be pointing; - ANSWER ✓✓✓out away
from boom center
When dismantling a lattice boom, which boom pins should be removed first? - ANSWER
✓✓✓both lower
T or F
It is safe to climb under a boom to knock out the boom pins if the crane has tension on
the pendant lines - ANSWER ✓✓✓false
What important step must be followed when welding a damaged crane boom? -
ANSWER ✓✓✓follow manufactures welding procedure,have a welder certified to the
correct welding procedure, use correct welding rods and heat treatment
All of above
What position should the gantry of a crane be in when lifting a load? - ANSWER ✓✓✓
highest position
Jib forestay and backstay pendant lines should be; - ANSWER ✓✓✓of equal length or
the backstay pendant lines should be longer
t or F
Jib capactiy "increases" as the angle to ground decreases. - ANSWER ✓✓✓False
T or F
On most cranes the jib hoist and boom hoist can be safely operated simultaneously -
ANSWER ✓✓✓false
Which of the following is an auxillary boom, or extension of the main boom? - ANSWER
✓✓✓jib
NCCCO MOBILE CRANE EXAM/99
QUESTIONS AND ANSWERS
(CRANE PRACTICE TESTS)
When using hand signals to direct a crane operator, an extended arm with the thumb
vertical and the fingers opening and closing into a fist indicates: - ANSWER ✓✓✓raise
boom and lower the load
Two closed fists with both thumbs pointing toward each other is the signal for: -
ANSWER ✓✓✓retract hydraulic boom
Which of the following is not a permitted use of an "operational aid"? - ANSWER ✓✓✓
used to test weigh a load prior to hoisting
T or F
Any crane component can be used on any other crane made by the same company -
ANSWER ✓✓✓false
A rough terrain crane is commonly referred to as; - ANSWER ✓✓✓cherry picker
Which of these conditions could be dangerous when operating a crane around a newly
constructed building? - ANSWER ✓✓✓uncompacted soil
When hoisting on outriggers with a permitted 360 degree swing, which position is the
most hazardous in most conditions? - ANSWER ✓✓✓over corner
T or F
The ground pressure under the outriggers is higher than it is under a crawler track
because of the smaller bearing surface - ANSWER ✓✓✓True
An outrigger float should be approximately how much larger that the outrigger pad? -
ANSWER ✓✓✓3 times
, When setting a a crawler crane for use on a new site, which of the following is not
required prior to use? - ANSWER ✓✓✓name of the person that will operate the crane
Where should the slings be attached when lifting lattice boom sections? - ANSWER ✓
✓✓use the end connections
T or F
During crane assembly, the counterweight is mounted after the installation of the
complete boom - ANSWER ✓✓✓false
When assembling lattice boom sections, which set of pins are installed first? - ANSWER
✓✓✓both upper
When installing the boom pins, the pin should be pointing; - ANSWER ✓✓✓out away
from boom center
When dismantling a lattice boom, which boom pins should be removed first? - ANSWER
✓✓✓both lower
T or F
It is safe to climb under a boom to knock out the boom pins if the crane has tension on
the pendant lines - ANSWER ✓✓✓false
What important step must be followed when welding a damaged crane boom? -
ANSWER ✓✓✓follow manufactures welding procedure,have a welder certified to the
correct welding procedure, use correct welding rods and heat treatment
All of above
What position should the gantry of a crane be in when lifting a load? - ANSWER ✓✓✓
highest position
Jib forestay and backstay pendant lines should be; - ANSWER ✓✓✓of equal length or
the backstay pendant lines should be longer
t or F
Jib capactiy "increases" as the angle to ground decreases. - ANSWER ✓✓✓False
T or F
On most cranes the jib hoist and boom hoist can be safely operated simultaneously -
ANSWER ✓✓✓false
Which of the following is an auxillary boom, or extension of the main boom? - ANSWER
✓✓✓jib
