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CET Study Cards > Course 2: Unit 6 > Flashcards

Course 2: Unit 6 Flashcards

1
Q

The electric elevator driving machine may be located:
A. Above the hoistway or at the side of the hoistway only.
B. At the bottom of the hoistway only.
C. Above the hoistway, in the hoistway, below the hoistway, at the side of the hoistway or remote from the hoistway.
D. Only above the hoistway, at the top or side of the hoistway.

A

C. Above the hoistway, in the hoistway, below the hoistway, at the side of the hoistway or remote from the hoistway.

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2
Q

When determining the beam classification, the following measurements are made:
A. Beam height and width and thickness of the flanges and web.
B. Beam width and thickness of the web.
C. Beam height and thickness of the web.
D. Thickness of the web and flanges.

A

A. Beam height and width and thickness of the flanges and web.

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3
Q

Machine floors with different levels of _____ inches or more must have a stairway access and railing around the upper level.
A. 36
B. 8
C. 15
D. 35

A

D. 35

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4
Q

Machine beams are:
A. Attached directly to the machine.
B. Always below the machine room floor slab.
C. Below the machine room floor slab or level with the floor slab.
D. Always required.

A

C. Below the machine room floor slab or level with the floor slab.

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5
Q

The purpose of machine beams is to:
A. Transfer the load caused by the hoisting machine to the building structure.
B. Hold the machine together.
C. Support the top of the hoistway.
D. Beam the walls together

A

A. Transfer the load caused by the hoisting machine to the building structure.

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6
Q

When leveling support beams, it is important to shim beams using:
A. Tapered washers
B. Mortar
C. Full width shims
D. Wood

A

C. Full width shims

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7
Q

Machine beams are secured or may be secured in place by:
A. Bolting or welding to the building structure.
B. Welding only.
C. Clips only
D. Bolting only.

A

A. Bolting or welding to the building structure.

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8
Q

Basement-mounted machines are required to have a foundation:
A. To support the increased weight of the machine.
B. To resist the up-thrust forces of the entire loaded elevator.
C. That weighs as much as the machine.
D. That is made of steel the same weight as the loaded elevator and counterweight.

A

B. To resist the up-thrust forces of the entire loaded elevator.

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9
Q

Sheave alignment for an underslung elevator:
A. Is easier than that for 1:1 roped elevators
B. Is not critical because of the increased length of rope to go under the car.
C. Is more difficult than that for 1:1 elevators
D. Is the same as for 3:1 roped elevators

A

C. Is more difficult than that for 1:1 elevators.

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10
Q

When installing a hoist machine, a base frame is used to:
A. Provide a firm base for the machine.
B. Prevent the machine base from being damaged.
C. Allow installation of the machine and wiring ducts and conduits before the floor slab is poured.
D. Provide a firm attachment of the machine in seismic zones.

A

C. Allow installation of the machine and wiring ducts and conduits before the floor slab is poured.

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11
Q

The base frame for machine bedplates is made of channels:
A. Usually laid on the machine beams at an angle of 90.
B. Usually laid on the machine beams parallel.
C. Usually laid on the machine beams at an angle of 30 to 45*.
D. Always placed on top of the concrete slab as soon as it is poured.

A

A. Usually laid on the machine beams at an angle of 90*.

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12
Q

When installing a gearless double-wrapped machine:
A. The secondary sheave should be offset equal to the rope diameter.
B. The secondary sheave must not be offset.
C. The secondary sheave should be offset the amount equal to the distance between the sheave grooves.
D. The secondary sheave offset varies and should be shown as indicated on the layout plan view.

A

D. The secondary sheave offset varies and should be shown as indicated on the layout plan view.

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13
Q

When installing a winding drum machine:
A. The drum must be set to overlap the rope lead from the car.
B. The drum must be set to plumb the rope lead from the car.
C. The drum must be offset to allow for the rope to wind on the drum.
D. The drum must be set at an angle shown on the layout plan view to keep the ropes in the sheave grooves.

A

B. The drum must be set to plumb the rope lead from the car.

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14
Q

Machine beams for MRLs are located:
A. Above the top of the hoistway.
B. In the hoistway.
C. Level with the hoistway ceiling.
D. Machine beams are not used.

A

B. In the hoistway

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15
Q

Machine space and control space is accessible:
A. Only to elevator personnel
B. Only to elevator and authorized personnel
C. Only to elevator, authorized personnel and emergency personnel.
D. Anyone

A

B. Only to elevator and authorized personnel

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16
Q

A deflector sheave is not needed:
A. Where the distance from the centerline of the car guides to the centerline of the counterweight guides is equal to the diameter of the drive sheave.
B. Where the diameter of the drive sheave is larger than the distance from the plumb drop for counterweight rail to the plumb drop for the car rails.
C. Where heavy-duty counterweight guide rails and guides are used.
D. Where heavy-duty car guides are used.

A

A. Where the distance from the centerline of the car guides to the centerline of the counterweight guides is equal to the diameter of the drive sheave.

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17
Q

The primary purpose of the deflector sheave is to:
A. Connect the movement of the car with counterweight.
B. Prevent wear on the drive sheave.
C. Prevent wear on the drive motor.
D. Route the hoist ropes to align with the hitch point

A

D. Route the hoist ropes to align with the hitch point.

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18
Q

New secondary sheaves usually have:
A. Antifriction bearings
B. Sleeve bearings
C. Self-lubricated bearings
D. Wooden bearings

A

A. Antifriction bearings

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19
Q

When drilling bolt holes to mount secondary sheaves:
A. The use of templates is recommended.
B. The use of templates is not recommended.
C. Only inexperienced technicians need to use templates.
D. Templates are never used.

A

A. The use of templates is recommended.

20
Q

Shims used to plumb the secondary sheave should be made of:
A. Aluminum
B. Brass
C. Paper or poster board
D. Steel

A

D. Steel

21
Q

If a sheave turns with the shaft:
A. The shaft and sheave fit tight and are keyed together.
B. There is a running fit between the shaft and the sheave.
C. There is a loose fit between the shaft and the sheave.
D. The shaft and the sheave are made as one unit

A

A. The shaft and sheave fit tight and are keyed together.

22
Q

The secondary sheave centerline must be:
A. At 15* with the drive sheave centerline.
B. At 2* with the drive sheave centerline.
C. Parallel with the drive sheave centerline.
D. Approximately even with the drive sheave centerline.

A

C. Parallel with the drive sheave centerline.

23
Q

The purpose of the governor is to:
A. Control the speed of the elevator.
B. Open an electrical contact and cause application of the safety if the car or counterweight overspeed in the down direction.
C. Cause the elevator to accelerate at a uniform rate.
D. Cause the elevator to decelerate smoothly.

A

B. Open an electrical contact and cause application of the safety if the car or counterweight overspeed in the down direction.

24
Q

If the governor is not plumbed:
A. Excess wear of the rope and sheave will result and failure to properly operate may result.
B. Additional lubricant will be needed on the governor rope.
C. There will be no adverse effect.
D. The car or counterweight safety will need to be set out of plumb to offset the effect.

A

A. Excess wear of the rope and sheave will result and failure to properly operate may result.

25
Q

The adjustment for tripping speed and governor rope pull-through force set and sealed at the factory.
A. Can be changed if the technician feels they are wrong.
B. Are tested during acceptance test and if necessary, adjusted and resealed.
C. The seals can be broken but adjustments must not be changed.
D. Cannot be adjusted even if there is a change in application.

A

B. Are tested during acceptance test and if necessary, adjusted and resealed.

26
Q

When installation of the governor is complete:
A. The rope-gripping jaw must be lubricated with bearing grease to prevent damage to the governor rope.
B. The rope-gripping jaws must be cleaned of all grease and foreign materials.
C. The rope-gripping jaws must not be cleaned, but the factory coating must remain to prevent damage to the governor rope.
D. The rope-gripping jaws should be filed with a round file to conform to the diameter of the governor rope.

A

B. The rope-gripping jaws must be cleaned of all grease and foreign materials.

27
Q

The machine room selector is connected to the elevator car with a steel tape or wire rope:
A. So that it can help lift the elevator.
B. So it can tract the movement of the elevator.
C. To prevent vibration as the elevator car travels.
D. To provide a regenerative voltage for efficient operation.

A

B. So it can tract the movement of the elevator.

28
Q

With a tape-driven selector, the tape sheave on the selector:
A. Is aligned with a plumb bob over the hitch point on the elevator car.
B. Is aligned to be at least 2 feet from the suspension ropes.
C. Is aligned with the hoist machine.
D. Is aligned to be parallel with the governor sheave.

A

A. Is aligned with a plumb bob over the hitch point on the elevator car.

29
Q

When the adjustment for tripping speed and pull-through force on a governor is sealed.
A. Adjustment can be changed without breaking the seal.
B. They should be compressed with any handy tool.
C. The person of firm that installed the seal and date installed is not important.
D. The adjustment cannot be changed without breaking the seal and a means to identify the installer is required.

A

D. The adjustment cannot be changed without breaking the seal and a means to identify the installer is required.

30
Q

The electrical clearance requirements on controllers with doors are measured from the:
A. Front of the enclosure door.
B. Live electrical parts in the controller.
C. Back of the controller cabinet.
D. Front of the first relay.

A

A. Front of the enclosure door.

31
Q

A controller for a hydraulic elevator is facing a concrete wall. It has 208-volt starter relays in it. The minimum horizontal clearance between the controller and the wall is:
A. 30 Inches.
B. 36 inches.
C. 42 inches.
D. 48 inches.

A

C. 42 inches.

32
Q

The crates in which M-Gs are shipped:
A. Are not removed until the M-G is in place.
B. Are completely removed before hoisting the M-G.
C. Are removed for hoisting but the skids are left in place until the M-G has been hoisted and placed in position.
D. Are made of cardboard and will protect the unit from weather damage.

A

C. Are removed for hoisting but the skids are left in place until the M-G has been hoisted and placed in position.

33
Q

M-G sets are:
A. Small and lightweight and not easily damaged.
B. Small and heavy and easily damaged.
C. Small enough to be lifted by hand.
D. Too large for safe handling.

A

B. Small and heavy and easily damaged.

34
Q

M-G sets:
A. Can be installed at any angle.
B. Must be level to prevent unnecessary wear.
C. Are self leveling.
D. Must be level with the top of the housing.

A

B. Must be level to prevent unnecessary wear.

35
Q

Relay panels, controllers or floor selectors:
A. Are required to be electrically grounded.
B. Are not required to be electrically grounded.
C. May be electrically grounded.
D. Must be connected to the lightening rod system.

A

A. Are required to be electrically grounded.

36
Q

A hydraulic machine consists of the following components:
A. Pump, motor, valves, and associated internal piping.
B. Cylinder, plunger and external piping.
C. Pump, valve and all piping.
D. Tank, valves and oil.

A

A. Pump, motor, valves and associated internal piping.

37
Q

Pipe buried below ground is required to be:
A. Placed inside a schedule 80 PVC pipe.
B. Made stainless steel.
C. Made of doubled galvanized with electronic plating.
D. Protected against corrosion by either of three methods specified in the Code.

A

D. Protected against corrosion by either of three methods specified in the Code.

38
Q

The hydraulic machine room is usually located:
A. Below the hoistway.
B. At the top of the hoistway
C. Inside the hoistway.
D. Adjacent to the hoistway at the lowest level.

A

D. Adjacent to the hoistway at the lowest level.

39
Q

The piping that runs from the hydraulic machine to the cylinder should be:
A. As short as possible with as few elbows and fittings as possible.
B. As long as possible with several elbows and fittings.
C. Made of stainless steel.
D. Made of galvanized stainless steel.

A

A. As short as possible with as few elbows and fittings as possible.

40
Q

Fittings used in the hydraulic system must be:
A. Painted red or black
B. Marked to indicate the pressure rating and manufacturer and testing.
C. Made of heavy cast iron.
D. Made of malleable steel.

A

B. Marked to indicate the pressure rating and manufacturer and testing.

41
Q

When grooved pipe couplings are used:
A. They should be tightened so that the coupling halves seat pad to pad.
B. They should be tightened only hand tight.
C. They should be tightened as tight as possible.
D. Lock-tight or thread-lock must be used.

A

A. They should be tightened so that the coupling halves seat pad to pad.

42
Q

When tapered pipe threads are used, the sealing compound should be placed on:
A. Male threads only.
B. Female threads only.
C. Both the male and female threads.
D. Neither the male or female threads

A

A. Male threads only.

43
Q

The electrical wiring from the main-line disconnect to the controller:
A. Is normally done by the elevator technician
B. Is normally done by the helpers.
C. Is normally done by electricians.
D. Is normally done by the first person that gets to it.

A

C. Is normally done by electricians.

44
Q

The hydraulic controller is best mounted:
A. On the tank so that the heat from the oil will keep it warm.
B. On the wall away from the tank so the heat from the oil will not affect it.
C. On the floor near the hydraulic machine.
D. On the ceiling over the hydraulic machine.

A

B. On the wall away from the tank so the heat from the oil will not affect it.

45
Q

When an oil cooler is required, the location of the heat exchange:
A. Must be on the layout drawing.
B. Is not required.
C. Is specified in the design.
D. Is determined by the electrician so that the wiring can be connected.

A

C. Is specified in the design.

46
Q

When the hydraulic line is outside the machine room or hoistway, it must be:
A. Painted bright red.
B. Painted orange.
C. Protected and marked “Elevator Hydraulic Line”
D. In a separated fire rated enclosure.

A

C. Protected and marked “Elevator Hydraulic Line”

47
Q

The minimum grade of pipe to be used is:
A. Shown on the layout drawing
B. Specified by the job superintendent
C. Specified by the mechanic in charge
D. Specified by the jurisdiction inspector

A

A. Shown on the layout drawing.

CET Study Cards (11 decks)

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