question bank source: Safety Production Simulation Examination Yidiantong public account applet
Portal Crane Driver Examination Reference Answers and Portal Crane Driver Examination Questions Analysis are the summary of Safety Production Simulation Examination Yidiantong Question Bank teachers and portal crane driver operation certificate students who have passed the examination, which are relatively effective in helping portal crane driver examination question bank students pass the exam smoothly.
1. [Multiple choice questions] Article 14 of the " Special Equipment Safety Law of the People's Republic of China " stipulates that special equipment ( ), testing personnel and ( ) must obtain corresponding qualifications in accordance with relevant national regulations before they can engage in relevant work. (AB)
A, safety management personnel
B, operators
C, maintenance personnel
2. [Multiple choice question] When two cranes lift an object, the driver should (). (CD )
A, you can choose the method according to your own operation situation
B, work at the slowest speed
C, strictly obey the command
D. Hoisting
html according to the pre-planned plan 13. [Multiple-choice question] Brief history of the accident: A welder in a chemical industry zone was operating a 5t single-beam electric hoist to lift the welded parts. Suddenly the welded parts rolled over and fell from mid-air, causing the employee's death on the spot. Accident investigation: The equipment passed regular inspections, was registered, and is within the validity period. The safety device is effective. The auxiliary hoist (shelf) uses two wire ropes for lifting operations. One is hung on the hook , and one has fallen off. The welder has not been trained in lifting operations. Analysis of the cause of the accident: ( ) (BCD)
A, the safety device failed
B, there was no relevant training for employees
C, the shelves did not use special spreaders
D, there was no on-site management personnel to stop risky operations
4. [Multiple choice questions] The audio signals used by the driver are: ( ). (ACD)
A, one long beep
B, two long beeps
C, one short beep
D, two short beeps
5. [Multiple choice question] The basic requirement for the operation of the operating mechanism is to achieve "three stability", namely: (). (ABD)
A, stable starting
B, stable running
C, stable descending
D, stable parking
6. [Multiple choice question] According to the number of bending resistance of the steel wire, the toughness grade of the steel wire is divided into: (). (ABC)
A, special grade
B, grade I
C, grade II
7. [Multiple choice question] The function of lubricating oil is: (). (ABCD)
A, lubrication
B, cooling
C, cleaning
D, sealing
8, [Multiple choice questions] The basic conditions for combustion are: (). (BCD)
A, certain temperature
B, combustible material
C, combustion aid
D, ignition source
9. [Multiple choice question] The reason why the crane cannot start may be (), etc. (ABCD)
A, overload
B, no power, or fuse burned out
C, emergency switch, safety switch is not closed
D, controller handle is not placed in the zero position
10. [Multiple choice questions] The lifting weight characteristic curve is usually drawn comprehensively based on () three conditions. (BCD)
A, lifting capacity
B, overall machine stability
C, structural strength
D, institutional strength
11, [Multiple choice question] The function of the wheel rim is: (). (BD)
A, reduce wheel pressure
B, guide
C, uniform wheel pressure
D, prevent derailment
12, [Multiple choice questions] The slewing bearing device of the portal crane is ().(ABC)
A, rotary table type
B, rotating column type
C, fixed column type
D, main column type
13, [Single choice question] () refers to the inspection and preventive maintenance performed before, during and after the daily operation of the crane to detect hidden dangers in time and maintain good working conditions. (C)
A, regular maintenance
B, secondary maintenance
C, routine maintenance
14, [Single choice question] "Special Equipment Safety Law of the People's Republic of China" is a () (A )
A, laws
B, administrative regulations
C, departmental regulations
15, [Single-choice question] "People's Republic of China The Special Equipment Safety Law of the Republic of China stipulates that if special equipment has serious accident risks, has no value for modification or repair, or meets other scrapping conditions stipulated in safety technical specifications, the special equipment user shall fulfill its scrapping obligations, take necessary measures to eliminate the use function of the special equipment, and apply for a use registration certificate from the original registered special equipment safety supervision and management department ( ) procedures. (C)
A, revoked
B, revoked
C, canceled
16, [Single-choice question] "Special Equipment Safety Law of the People's Republic of China" stipulates that any unit or individual has the right to report to the department responsible for the safety supervision and management of special equipment and relevant departments () involving the safety of special equipment, and the department that receives the report should handle it in a timely manner. (A)
A, illegal behavior
B, wrong behavior
C, improper behavior
17. [Single-choice question] "Special Equipment Safety Law of the People's Republic of China" stipulates: The installation, modification and major repair process of boilers, pressure vessels , pressure pipes , elevators, hoisting machinery , passenger ropeways, and large amusement facilities must go through ( ), the product shall not be delivered for use if it fails to perform this procedure or fails to meet the qualification standards. (C)
A, approval
B, filing
C, supervision and inspection
D, notification
18, [Single choice question] Generally, when two steel wire ropes are used to lift objects, the ideal angle is: (). (B)
A, 30°～45°
B, 60°～90°
C, 120°～50°
19, [Single choice question] Set up to prevent the crane from overturning: (). (B)
A, luffing limiter
B, torque limiter
C, traveling limiter
20, [Single-choice question] Set up to prevent the crane from overloading: (). (C)
A, variable amplitude limit
B, travel limit
C, torque limit
21, [Single choice question] () wheels are only used when there are horizontal guide rollers on both sides of the wheel. (C)
A, single rim
B, double rim
C, no rim
22, [Single choice question] Special electromagnet for sucking and transporting steel plates and steel sections should be equipped with an audible and visual alarm device when the voltage is lower than the electromagnet rated voltage ( ). (A)
A, 85%
B, 100%
C, 110%
23, [Single choice question] Multi-person bundling operations should be directed by ( ). (A)
A, dedicated person
B, joint
C, one person
24, [Single choice question] For cranes working along the coast such as portal crane , when the wind force is greater than (), the work should be stopped and the crane should be anchored. (B)
A, level 5
B, level 6
C, level 7
25, [Single-choice question] The vision (including corrected vision) requirements for crane drivers should be above (), and there is no color blindness .(B)
A, 1
B, 0.7
C, 0.4
26, [Single-choice question] Special equipment users should provide special equipment safety and energy-saving education and training to special equipment operators to ensure that special equipment operators have the necessary special equipment ( ) knowledge. (D)
A, safety
B, professional theory
C, operational skills
D, safety, energy saving
27, [Single-choice question] Each () temporary carpentry room, paint room and wood and machine tool room, etc., is equipped with a fire extinguisher of the appropriate type. (C)
A, 15m2
B, 20m2
C, 25m2
D, 30m2
28, [Single choice question] When the hook is stabilized, the following speed ( ). (B)
A, not too fast
B, not too slow
C, difficult to determine
29, [Single-choice question] The buffer is a () device. (B)
A, acceleration
B, energy absorption
C, deceleration
30. [Single-choice question] To flip an object 90 degrees in the air (such as ladle ), the auxiliary hook should be hung at the ( ) part of the hanging object. (C)
A, upper
B, middle
C, lower
31. [Single-choice question] The equipment should be tied firmly, and the main bearing point ( ) is the center of gravity of the equipment to prevent tipping. (B)
A, lower than
B, higher than
32, [Single choice question] When the brake belt of the crane brake is worn beyond the original thickness ( ), it should be replaced. (B)
A, 40%
B, 50%
C, 60%
33, [Single choice question] The load test load of the crane is the rated load (). (C)
A, 125%
B, 120%
C, 110%
34. [Single-choice question] When the crane is running under the rated load, when the brake takes effect, it will continue to move for a certain distance under the action of inertia. This distance is called (). (C)
A, working stroke
B, safety stroke
C, braking stroke
35. [Single-choice question] After the crane completes its work, the hook should be raised to a height close to ( ). (C)
A, workpiece
B, ground
C, upper limit
36, [Single choice question] After the crane completes its work, the empty hook should be raised to: (). (A)
A, close to the upper limit
B, in the middle
C, placed on the ground
37. [Single-choice question] Lifting machinery is not allowed to be used, safety production simulation test is easy to use, use: (). (A)
A, cast hook
B, forged hook
C, steel plate riveted hook
38, [Single choice question] The lifting height of the crane refers to (). (C)
A, the distance between the end of the arm and the crane supporting ground
B, the distance between the hook lower plane and the lifting supporting ground
C, the distance between the hook mouth center and the crane supporting ground when the hook is raised to the highest position (the position restricted by the height limiter)
39, [Single choice question] The diameter of the wire rope decreases relative to the nominal diameter ( )% or more, the wire rope should be scrapped even if no broken wire is found. (C)
A, 2
B, 4
C, 7
D, 10
40, [Single choice question] The ends of the wire rope are fixedly connected with rope clamps, and the rope clamp pressure plate should be on the wire rope: (). (A)
A, long rope side
B, short rope side
C, any side
41. [Single-choice question] From the perspective of production safety, () refers to the source or state that may cause personal injury, illness, property loss, damage to the working environment or other losses.(C)
A, danger
B, accident hazard
C, hazard source
D, major hazard source
42, [Single choice question] Approximate calculation formula of the allowable tension of the wire rope: P=d2/10*(T), where d represents: (). (A)
A. Wire rope diameter in cents
B. Wire rope diameter in millimeters
C. Wire rope radius in cents
D. Wire rope radius in millimeters
43. [Single choice question] The lifting capacity of the auxiliary hook of the portal crane is often the lifting capacity of the main hook: (). (B)
A, 10~20%
B, 20~30%N
C, 30~40%
44, [Single choice question] The stability of the portal crane under its own weight is called (). (A)
A, self-weight stability
B, lateral stability
C, load stability
45, [Single-choice question] After the operating mechanism of the portal crane is braked, the rolling distance of the crane should not exceed ( ) meters. (A)
A, 1.5 meters
B, 1 meter
C, 0.5 meters
46, [Single choice question] The wind speed alarm of the portal crane should alarm when the wind speed is ( ) m/s. (A)
A, 20
B, 40
C, 100
47, [Single-choice question] The audio stops with three short beeps: (). (B)
A, hook rising
B, hook falling
C, slightly falling
48. [Judgment Question] The "Special Equipment Safety Law of the People's Republic of China" stipulates that special emergency plans for special equipment accidents shall be formulated by local people's governments at all levels, and the user unit only needs to conduct emergency drills regularly. (×)
49. [True or False Question] The "Special Equipment Safety Law of the People's Republic of China" stipulates that units that produce, operate, and use special equipment and their principal persons in charge are responsible for the safety of the special equipment they produce, operate, and use. (√)
50. [True or False Question] It is strictly forbidden to use unmanned cranes to carry people. (√)
51. [True or False Question] master controller is a direct control electrical appliance that sends instructions to the control circuit and controls the work of the main circuit. (×)
52. [Judgement Question] During the operation, employees can decide whether to wear work clothes or use labor protection supplies based on the actual situation. (×)
53. [True or False Question] During operation, the maximum elevation angle of the crane's boom shall not exceed the factory regulations. If there is no data available, it shall not exceed 80°. (×)
54. [True or False Question] When using a set of wire rope rope clamps, at least two rope clamps must be used. (×)
55. [True or False Question] The effect of force is only related to the size and direction of force. (×)
56. [True or False Question] The shackle can bear horizontal force. (×)
57. [True or False Question] The shackle wear reaches 20% of its original size and should be scrapped. (√)
58. [True or False Question] It was found that someone was electrocuted, some. Safety production simulation exam is easy to pass. The power supply cannot be cut off for any reason. On the premise of ensuring the safety of the rescuers themselves, appropriate measures should be taken to quickly remove the electrocuted person from the electrified body. (√)
59. [True or False Question] Any danger signal sent by the driver to anyone should be followed. (√)
60. [True or False Question] The driver should be able to appropriately adjust the brakes of each mechanism according to the working conditions of different weights of lifted goods, operating route lengths and different speeds, so that they can operate safely and reliably. (√)
61. [True or False Question] Hoisting construction must have safety technical measures otherwise no hoisting operations shall be carried out. (√)
62. [True or False Question] Because the resultant force is equal to the vector sum of the component forces, the resultant force must be greater than the force. (×)
63. [True or False Question] When a load is hoisted, sudden braking may cause the wire rope to be unable to withstand the excessive short-term and sharp impact load and cause breakage.(√)
64. [True or False Question] The hook should be equipped with a safe production simulation test and an anti-rope safety device. (√)
65. [True or False Question] When the hanging object swings back during operation, the gear of the controller should be reduced to reduce the vehicle speed. (√)
66. [True or False Question] The cross-sections of the composite steel wire rope strands are arranged very closely, and the adjacent steel wires are in good contact. When bypassing the pulleys and drums, great local stress will not be generated. (√)
67. [True or False Question] When the braking stroke distance of the trolley is too large, the braking will be too strong, causing impact and hanging objects to shake, which may easily deform the bridge and damage some parts. (×)
68. [True or False Question] When the signal sent by the commander violates the provisions of the standard, the driver has the right to refuse to execute it. (√)
69. [True or False Question] When the overhead transmission line breaks and falls to the ground, people are not allowed to enter the danger zone with a radius of 10m. (√)
70. [True or False Question] When operating the electromagnetic chuck or grab crane, no one is allowed to work or pass under the moving hanging objects. (√)
71. [True or False Question] The anchoring device or rail clamp and other devices must be loosened before the rail crane is driven. (√)
72. [True or False Question] When inspecting the plate hook, the hook piece with surface cracks must be replaced in time. (√)
73. [True or False Question] Special equipment should be registered with the special equipment safety supervision and management department before use, and the registration mark should be handed over to the archives department for proper management. (×)
74. [Judgement Question] Damage to electrical insulation and poor grounding can lead to electric shock and casualties. (√)
75. [True or False Question] The travel limiter is set to ensure the safety of lifting. (×)
76. [True or False Question] When the overturned object tips over on its own, the lifting hook of the lifting mechanism must be activated against the trend and its descending speed must be controlled. When the hook is dropped, the hook must be kept vertical. (×)
77. [True or False Question] When an object that has been overturned by the 'Safety Production Mock Examination' is tipped under the action of gravity moment, the cart or trolley should be driven back quickly to adjust the position of the car body. (√)
78. [Judgement Question] The purpose of adjusting the working length of the main spring is to obtain appropriate braking torque. (√)
79. [True or False Question] The lifting mechanism is composed of a power device, a reduction device, a reel and a braking device. (√)
80. [Judgement Question] When lifting scrap steel, the lifting electromagnet should be kept as flat as possible. (√)
81. [True or False Question] Crane maintenance is divided into daily maintenance, first-level maintenance and second-level maintenance. (√)
82. [True or False Question] The working level of the crane is divided according to the rated lifting capacity and load status. (×)
83. [Judgement Question] The electrical equipment of the crane must ensure accurate and reliable transmission performance or control performance, and be able to cut off the power supply and stop safely in an emergency. (√)
84. [True or False Question] The hoisting mechanism of the crane, luffing mechanism , must be equipped with normally closed brakes. (√)
85. [True or False Question] The rated lifting capacity of the crane only refers to the maximum weight allowed to be lifted by the crane during normal operation. (×)
86. [True or False Question] The overload limiter is mainly used to prevent the lifting weight from exceeding the lifting load capacity to avoid breakage of the wire rope and damage to the lifting equipment . (√)
87. [True or False Question] The pulleys made of metal have short cracks and can continue to be used. (×)
88. [True or False Question] When forging the hook, an indelible mark should be printed in the low stress area. The mark content includes: rated lifting weight, factory name, inspection mark, inspection date, and product number. (√)
89. [True or False Question] Forging hooks can be without any marking content. (×)
90, [True or False Question] Portal cranes generally use a ring gear rotating transmission mechanism. In order to protect the friction surface and keep the friction coefficient and stable, the friction surface cannot be immersed in oil.(×)
91. [True or False Question] The luffing mechanism of the gantry crane does not need to be equipped with a torque limiter. (×)
92. [True or False Question] The luffing mechanism of the gantry crane makes the goods travel in a straight and horizontal direction when the luffing mechanism is used. (√)
93. [True or False Question] Portal crane drivers must strictly follow the safety regulations of "four crosses" and "eight checks" before taking over. (√)
94. [True or False Question] Portal cranes are widely used in ports, docks, shipyards, and hydropower station construction sites. They are indispensable and important equipment for mechanizing the production process. (√)
95. [True or False Question] The gantry crane has four major working mechanisms, among which lifting, luffing, and rotation are working mechanisms, and they can operate jointly at the same time. (√)
96. [True or False Question] The luffing mechanism of the gantry crane is a non-working mechanism. (×)
97. [True or False Question] The slewing drive mechanism of the portal crane is composed of motor , reducer, gear, brake and electrical control. (√)
98, [True or False Question] Common luffing drive devices for the portal crane boom include rack drive, sector gear drive, screw nut drive and other devices. (√)
99. [True or False Question] Protective covers should be installed on the electrical equipment of portal cranes working in the open air. (√)
100. [True or False Question] When working at height, it is not allowed to throw debris and parts on the ground. (√)
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