EIAT EIAT Spatial Reasoning and Visualization 5 — Questions and Answers
Question 1: An elevator machine room drawing shows a scale of 1/4 inch = 1 foot. A machine measures 3.5 inches on the drawing. What is its actual length?
- 14 feet (Correct answer)
- 10.5 feet
- 12 feet
- 16 feet
Correct answer: 14 feet
At 1/4 inch per foot, divide the drawing measurement by 0.25: 3.5 ÷ 0.25 = 14 feet.
Question 2: A wire rope makes two full wraps around a sheave. How many degrees of total rotation does this represent?
- 720 degrees (Correct answer)
- 360 degrees
- 540 degrees
- 180 degrees
Correct answer: 720 degrees
One full wrap equals 360 degrees, so two full wraps equal 720 degrees.
Question 3: Looking at a front elevation drawing of an elevator door, the center-opening door panels are shown in the closed position. Where would both panels be located when fully open?
- Each panel slides to the opposite side walls of the door opening (Correct answer)
- Both panels stack on the left side
- Both panels stack on the right side
- The panels fold and stack in the center
Correct answer: Each panel slides to the opposite side walls of the door opening
Center-opening doors have two panels that slide away from each other toward opposite jambs when opening.
Question 4: A counterweight assembly is shown in a hoistway cross-section. If the car is positioned on the left side of the hoistway, where is the counterweight typically located?
- On the right side or rear of the hoistway (Correct answer)
- Directly above the car
- Directly below the car
- On the same side as the car
Correct answer: On the right side or rear of the hoistway
The counterweight travels in a separate guide rail path offset from the car, typically on the opposite or rear side of the hoistway.
Question 5: A net is unfolded to form a 3D shape with 4 triangular faces and 1 square base. What solid does it form?
- Square pyramid (Correct answer)
- Triangular prism
- Cube
- Tetrahedron
Correct answer: Square pyramid
A square base with 4 triangular faces that meet at a point forms a square pyramid.
Question 6: In a hydraulic elevator diagram, the plunger extends upward into the cylinder. If the cylinder is buried 10 feet into the ground and the plunger stroke is 12 feet, what is the maximum height the car platform rises?
- 12 feet (Correct answer)
- 22 feet
- 10 feet
- 2 feet
Correct answer: 12 feet
The travel height equals the stroke length of the plunger, which is 12 feet regardless of cylinder burial depth.
Question 7: An isometric drawing of a hoistway shows three visible faces of a rectangular box. If the top face shows a 4×6 grid and the front face shows a 4×3 grid, what does the side face grid show?
- 6×3 grid (Correct answer)
- 4×6 grid
- 4×3 grid
- 6×6 grid
Correct answer: 6×3 grid
The side face shares the depth (6) and height (3) dimensions seen on the top and front faces respectively.
EIAT EIAT Spatial Reasoning and Visualization 5
An elevator machine room drawing shows a scale of 1/4 inch = 1 foot.
A machine measures 3.5 inches on the drawing.
What is its actual length?