2022 Tibet latest special worker (construction elevator) simulation test question bank and answers

The 100% question bank provides Special workers （ Construction elevator ） Examination questions 、 Special workers （ Construction elevator ） Test prediction questions 、 Special workers （ Construction elevator ） The real exam question 、 Special workers （ Construction elevator ） Certificate examination question bank, etc , Provide online questions and brush questions , Online mock exam , Help you pass the exam easily .

 

174. When the construction lift is operated , Motor overheating , The wrong way to deal with it is （）.

A. Adjust or replace the brake

C. Adjust the operation properly

B. Reduce cage load

D. When the power supply voltage is restored to 380V And then work

answer ：A

175. All kinds of safety protection and safety devices and all kinds of... On the construction elevator （） Must be complete and effective .

A. Safety attachment device

B. Safety information device

C. Safety signs

D. Security agencies

answer ：B

176.（） Use the guide rail frame of construction elevator 、 The scaffold shall be pulled or suspended by horizontal hard support 、 Construction pipeline 、 Rope slogan 、 Flags, etc .

A. must not

B. must

C. Sure

D. temporary

answer ：A

177. The metal shell of the construction lift shall be （） Or protective neutral connection , And shall comply with the provisions of the current industry standards .

A. Mutual grounding

B. Repeat protection

C. Lightning protection and neutral connection

D. Protective grounding

answer ：D

178. The height of construction lift exceeds 30m Of , Shall be installed as specified （） device .

A. Lightning protection and grounding protection

B. Repeat protection

C. Lightning protection and neutral protection

D. Mutual grounding protection

answer ：A

179. The cage of the construction elevator vibrates excessively during operation , It is not a fault because （）.

A. gear 、 The rack engagement clearance is too large

B. The connecting bolts of the guide roller are fastened

C. gear 、 Lack of lubrication for rack engagement

D. The clearance between the guide roller and the back wheel is too large

answer ：B

180. The lifting cage of the construction elevator has a jumping phenomenon during operation , It is not a fault because （）.

A. The rack bolt is loose

B. The docking step difference is too large

C. The guide rail frame is not deformed

D. The gear is severely worn

answer ：C

181.SS The brake of type a construction elevator fails , It is not a fault because （）.

A. All moving parts of the brake are adjusted in place

B. The mechanism is damaged , To obstruct movement

C. The brake lining or brake wheel is seriously worn

D. The brake lining or the connecting rivet of the brake pad is exposed

answer ：A

182. When the construction lift is operated , Erratic movement , It is not a fault because （）.

A. Poor line contact

B. The terminal wiring is loose

C. Reset is normal

D. The contactor is stuck

answer ：C

183.SS It is not a fault that the lifting cage of type a construction elevator cannot be lifted normally. The reason lies in （）.

A. In winter, the lubricating oil of reduction gearbox is too thick

B. Operation overload or superelevation

C. The latch of the docking device extends out and hangs on the rack

D. The brake is completely disengaged

answer ：D

 

184. The brake of construction elevator fails , The motor is difficult to start and has abnormal noise , It is not a fault because （）.

A. The rectifier element is damaged

B. The motor brake is open

C. The lift is seriously overloaded

D. The supply voltage is much lower than 360V

answer ：B

185. The brake torque of the construction elevator brake is insufficient , It is not a fault because （）.

A. There is oil dirt between the brake lining and the brake wheel

B. The brake spring is too loose

C. The movable hinge is stuck

D. The parts at the movable hinge are worn normally

answer ：D

186. When the construction lift is operated , On the hanging cage 、 There is a self-stop phenomenon during the lower operation , It is not a fault because （）.

A. On 、 The lower limit switch has poor contact or is damaged

B. Serious overload during operation

C. The control device has poor contact or

D. Button 、 The handle is not damaged

answer ：D

187. When the construction lift is operated , When the cage is running, the motor jumps , It is not a fault because （）.

A. The motor fixture is stable

B. The motor fixing device is loose

C. The motor rubber pad is damaged or lost

D. The connecting bolts between the reduction gearbox and the transmission plate are loose

answer ：A

188. When the construction lift is operated , The cage swings during operation , It is not a fault because （）.

A. The connecting bolt of the guide roller is loose

B. The connecting bolts of the guide roller are fastened

C. Support plate bolts are loose

D. The connecting bolts between the reduction gearbox and the transmission plate are loose

answer ：B

189. When the construction lift is operated , There is a jump when the cage starts or stops running , And the reason is that （）.

A. The motor braking torque is too large

B. The rubber block in the coupling of motor and reducer is damaged

C. The motor braking torque is too small

D. The rubber block in the coupling of motor and reducer is worn

answer ：C