Course 2: Unit 7 Flashcards
(121 cards)
The elevator car frame is made of:
A. Wood
B. Aluminum
C. Plastic
D. Steel
D. Steel
The two broad categories of elevator cars are:
A. Passenger and freight
B. Inclined and vertical
C. Fast and slow
D. Large (over 100 ft2) and small (less than 80 ft2)
A. Passenger and freight
The structure of the freight elevator is affected by:
A. The number of passengers that it is rated to carry.
B. The speed of the doors.
C. The type of enclosure.
D. The class of loading
D. The class of loading
The basic components of an elevator car are:
A. Frame, safety and platform
B. Controller, selector and crosshead.
C. Buffer, ropes and compensating chain.
D. Release carrier, hoistway door unlocking device and relating cables.
A. Frame, safety and platform
The stiles are:
A. A small ladder used to enter the car when working on it.
B. Types of interior finish.
C. Vertical structural members of the frame (sling), usually channels.
D. The interior of the door entrance adjacent to the jamb.
C. Vertical structural members of the frame (sling), usually channels.
The safety plank is located:
A. On top of the car.
B. Under the car.
C. Inside the car.
D. Any of the above
B. Under the car
The platform frame is fastened to the car frame by:
A. Welding
B. Riveting
C. Bolting
D. Brazing
C. Bolting
Diagonal bracing is used to level and secure the:
A. Car frame
B. Car platform
C. Crosshead
D. Door jambs
B. Car platform
The car frame is made of structural steel usually shaped like a:
A. L
B. U
C. O
D. Channel
D. Channel
The car steady is used to;
A. Steady the car attachment to the platform
B. Connect the top of the car to the stiles
C. Steady the control operation of the car
D. Prevent vertical movement of the car
B. Connect the top of the car to the stiles
The passenger car requires natural ventilation equal to:
A. 3.5% of the car volume equally divided between the top and bottom.
B. 3.5% of the car platform area equally divided between the top and bottom
C. 3.0% of the car platform area equally divided between the top and bottom
D. 3.5% of the car volume located at the top of the car and/or around the doors.
B. 3.5% of the car platform area equally divided between the top and bottom.
Force ventilation fans are required on all:
A. Elevators
B. Passenger elevators
C. Observation elevators exposed to direct sunlight
D. Freight elevators
C. Observation elevators exposed to direct sunlight.
Sliding guides are:
A. Required for passenger elevators.
B. Required for freight elevators.
C. Usually used on slow speed (< 150 ft/min) elevators.
D. Not used on modern elevators
C. Usually used on slow speed (<150 ft/min) elevators.
Roller guides usually have:
A. Sealed anti-friction bearings
B. Sleeve bearings
C. Anti-friction bearings with grease fittings
D. Nylon bearings
A. Sealed anti-friction bearings
Roller guides should be installed so that the tire:
A. Presses very tightly against the rail
B. And rail clearance is 1/16 in. to 1/8 in.
C. Fits snug against the rail with very light pressure
D. Fits tight against the rail so that the tire compresses 1/8 in. where it contacts the rail
C. Fits snug against the rail with very light pressure.
The postwise direction is:
A. Up and down the hoistway with the rail post
B. From the front to back of the car crossing the post
C. From side to side from one end of the crosshead to the other.
D. None of the above.
C. From side to side from one end of the crosshead to the other.
The crosshead is:
A. The end where the diagonal bracing (cross bracing) connects to the stiles
B. An owner or supervisor.
C. The beam forming the top car frame member.
D. The beam that is an integral part of the car top and enclosure
C. The beam forming the top car frame member.
The primary difference between freight and passenger elevator enclosures is that:
A. Freight enclosures are steel with little or no decorative finish.
B. Freight elevators may have perforated sides above six feet.
C. Freight elevators usually have no sound control measures.
D. All of the above.
D. All of the above.
On side post elevators, the guides are located:
A. On the side of the car.
B. On opposing corners of the car.
C. On all four corners of the car.
D. On the front and back of the car.
A. On the side of the car.
Corner-post elevators are required when there is a need for:
A. Two car entrances
B. Two car entrances located on adjacent sides of the car.
C. One entrance when it is the full width of the car.
D. Two entrances located on opposite sides of the car.
B. Two car entrances located on adjacent sides of the car.
A type “A” safety is called:
A. An instantaneous safety and can be used for any car speed.
B. An instantaneous safety and can be used for car speeds up to 125 ft/min.
C. An instantaneous safety and can be used for car speeds of 150 ft/min or less.
D. An instantaneous safety and can be used for car speeds up to 200 ft/min
C. An instantaneous safety and can be used for car speeds of 150 ft/min or less
The counterweight usually weighs as much as the empty car plus:
A. 30 to 50% of the rated load usually 40%.
B. 10% of the rated load.
C. 60% of the rated load.
D. 20% of the rated load.
A. 30 to 50% of the rated load usually 40%.
Safeties are required on counterweights for:
A. All elevators.
B. All elevators with rated speed of over 800 ft/min.
C. All elevators where there is space below the pit that is not permanently sealed against occupancy.
D. Hydraulic elevators only.
C. All elevators where there is space below the pit that is not permanently sealed against occupancy.
Assembly of the car frame is usually done:
A. At the top of the hoistway.
B. At the bottom of the hoistway.
C. In the center of the hoistway.
D. Outside the hoistway.
B. At the bottom of the hoistway.