elevator mechanics Actual Questions and Correct Answers
Q1
1. A contractor wants to raise the car speed from 100fpm to 125fpm, it currently has a 12"
sheave. What sheave is required?
Answer: 100fpm / 125fpm = 12" / X= 15"
Q2
2. A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or resistance.
What should you do?
Answer: Replace it with a larger MOV 630
Q3
3. On a Ward-Leonard circuit the break is set, but the motor is trying to slip through the break.
What is the issue?
Answer: Suicide Circuit 425
Q4
4. You have an old DC motor and are adding an SCR drive, what do you do to the interpoles?
Answer: Leave the interpoles alone. When adding a SCR drive to the generator, the
series loop is removed, as are the 3 resistors. Everything else remains the same.
Q5
5. A hydro runs up with no load, but
Answer: The relief valve is set too low 815
Q6
6. Runby for a 1:1 hits the CWT buffer
Answer: 22" 235
Q7
7. You need to work on a freight door
Answer: Door Operator Disconnect/ Main Line Disconnect
, Q8
8. The contractor requests that the
Answer: Adjust Tie Downs and Wall Ties 850
Q9
9. Working pressure on a Hydro is
Answer: 400psi x 150%= 600psi 815
Q10
10. What must be installed on a false
Answer: Spring Loaded Safeties 110
Q11
11. There is slight arcing between the
Answer: None
Q12
12. If rigging gear is roped 3:1 and a
Answer: 18,000lbs.
Q13
BEAM CLAMP is used to lift a
Answer: Note: Beam capacity is cut in half with use of
Q14
13. How much resistance is measured over a normally closed switch?
Answer: 1.2ohms. should be zero, but will never be that low
Q15
14. A car traveling in the hoistway always stops at the same spot and blows a fuse. What
causes this
Answer: Traveling cable has a cut/exposed wire or a short 515
Q1
1. A contractor wants to raise the car speed from 100fpm to 125fpm, it currently has a 12"
sheave. What sheave is required?
Answer: 100fpm / 125fpm = 12" / X= 15"
Q2
2. A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or resistance.
What should you do?
Answer: Replace it with a larger MOV 630
Q3
3. On a Ward-Leonard circuit the break is set, but the motor is trying to slip through the break.
What is the issue?
Answer: Suicide Circuit 425
Q4
4. You have an old DC motor and are adding an SCR drive, what do you do to the interpoles?
Answer: Leave the interpoles alone. When adding a SCR drive to the generator, the
series loop is removed, as are the 3 resistors. Everything else remains the same.
Q5
5. A hydro runs up with no load, but
Answer: The relief valve is set too low 815
Q6
6. Runby for a 1:1 hits the CWT buffer
Answer: 22" 235
Q7
7. You need to work on a freight door
Answer: Door Operator Disconnect/ Main Line Disconnect
, Q8
8. The contractor requests that the
Answer: Adjust Tie Downs and Wall Ties 850
Q9
9. Working pressure on a Hydro is
Answer: 400psi x 150%= 600psi 815
Q10
10. What must be installed on a false
Answer: Spring Loaded Safeties 110
Q11
11. There is slight arcing between the
Answer: None
Q12
12. If rigging gear is roped 3:1 and a
Answer: 18,000lbs.
Q13
BEAM CLAMP is used to lift a
Answer: Note: Beam capacity is cut in half with use of
Q14
13. How much resistance is measured over a normally closed switch?
Answer: 1.2ohms. should be zero, but will never be that low
Q15
14. A car traveling in the hoistway always stops at the same spot and blows a fuse. What
causes this
Answer: Traveling cable has a cut/exposed wire or a short 515
