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CET 10.7 Tests questions and correct answers
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CET 10.7 Tests questions and correct answers
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CET 10.7 Tests questions and correctanswers
Roped hydraulic elevators are required to have safeties, and they are: - correct answer ✔✔Required to
be tested the same as those for electric elevators.
A roped hydraulic elevator has a rated speed of 150 ft/min, and the operating speed in the down
direction is set at 210 ft/min (1.05 m/s): - correct answer ✔✔An oil buffer is required.
The Category 1 test of car spring buffer with a 2-1/2 in. (64 mm) stroke for a roped hydraulic elevator
consists of: - correct answer ✔✔No annual test required.
Refer to Figure 16 on page 139 in the Inspection Handbook, 6th Edition. The following measurements are
made. A = 67 in., B=75 in. and C=110 in. The spring buffer stroke is 4 in. The bottom car runby is ______
and bottom car clearance _______. - correct answer ✔✔Runby 8 in. and Clearance 31 in.
The Category 1 test of the car governor and safety when a type "A" safety is used on a roped hydraulic
elevator consists of: - correct answer ✔✔Tripping the governor by hand while operating the car down at
slow speed (inspection speed)
A hydraulic elevator has a working pressure of 400 psi (2758 kPa). The relief valve must prevent the
pressure from exceeding: - correct answer ✔✔600 psi (4137 kPa)
flexible hose and fitting are used in the machine room for supply piping, the Category 1 (annual)test
requirement consists of: - correct answer ✔✔Operating the elevator at the maximum relief setting for 30
seconds and observing the hose for defects.
A pump run timer is often used to provide protection for: - correct answer ✔✔Low oil and electrical
phase reversal protection.
The purpose of the overspeed valve is to: - correct answer ✔✔Prevent the elevator from overspeeding if
there is a rupture in the supply piping.
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