Mechanics Exam Review-NEIEP Comprehensive Questions
with Answers 100% Accuracy | 2025 LATEST UPDATE
1
A contractor wants to increase an elevator car's speed from 100 fpm to 125
fpm. If the current sheave diameter is 12 inches, what new sheave diameter
is required to achieve the desired speed?
A) 10 inches
B) 12 inches
C) 15 inches
D) 18 inches
E) 20 inches
Correct Answer: C) 15 inches
Rationale: The relationship between car speed and sheave diameter
is directly proportional. Using the formula (Old Speed / New Speed)
= (Old Sheave Diameter / New Sheave Diameter), we calculate (100
fpm / 125 fpm) = (12 inches / X). Solving for X, X = (125 fpm * 12
inches) / 100 fpm = 15 inches.
2
You find a Metal Oxide Varistor (MOV) in a circuit has burned out. After
replacing it, you still cannot get a voltage or resistance reading. What is the
most appropriate action?
A) Replace it with a smaller MOV.
B) Replace it with a larger MOV.
C) Try to repair the burnt-out MOV.
D) Connect a jumper wire across the MOV terminals.
E) Disregard the MOV; it's not essential.
Correct Answer: B) Replace it with a larger MOV.
Rationale: When an MOV repeatedly burns out, it indicates that it is
undersized for the voltage spikes it is intended to suppress.
Replacing it with a larger MOV (one with a higher voltage rating)
provides greater protection and prevents premature failure.
,3
In a Ward-Leonard elevator control system, the mechanical brake is engaged
and set, but the motor appears to be actively trying to overcome or slip
through the brake. What is the most probable issue?
A) A short circuit in the up-direction control.
B) The motor's field windings are open.
C) A "Suicide Circuit" condition is present.
D) The brake coils are drawing too much current.
E) The motor brushes are worn out.
Correct Answer: C) A "Suicide Circuit" condition is present.
Rationale: A "Suicide Circuit" in a Ward-Leonard system refers to a
control malfunction where the generator's output voltage (and thus
the elevator motor's armature current) is still present and trying to
drive the motor, even when the mechanical brake is set. This creates
a dangerous condition where the motor fights the brake.
4
When upgrading an older DC motor to incorporate a new Silicon Controlled
Rectifier (SCR) drive system, what action should typically be taken regarding
the interpoles of the DC motor?
A) Rewind the interpoles for higher voltage.
B) Leave the interpoles alone.
C) Bypass the interpoles entirely.
D) Add resistance in series with the interpoles.
E) Reverse the polarity of the interpoles.
Correct Answer: B) Leave the interpoles alone.
Rationale: When adding an SCR drive to a DC motor, the interpoles
are generally left alone. The series loop and associated resistors on
the generator are typically removed, but the interpoles are integral
to good commutation in the DC motor itself and remain.
,5
A hydraulic elevator functions correctly when running in the up direction with
no load, but fails to run when a full capacity load is placed in the car. What is
the most likely problem?
A) The down valve is stuck open.
B) The check valve is malfunctioning.
C) The relief valve is set too low.
D) The oil level in the tank is too high.
E) The motor's starting capacitor is faulty.
Correct Answer: C) The relief valve is set too low.
Rationale: The relief valve's purpose is to limit the maximum
pressure in the hydraulic system. If it is set too low, the pump will
not be able to generate enough pressure to lift a full load without
the relief valve opening and diverting fluid, effectively preventing
the car from running.
6
An elevator car with a 1:1 roping arrangement runs by 4 inches below the
top landing, hitting the Counterweight (CWT) buffer. The CWT runby should
be set at 18 inches. How much should the ropes be shortened to correct this?
A) 14 inches
B) 18 inches
C) 22 inches
D) 26 inches
E) 30 inches
Correct Answer: C) 22 inches
Rationale: The car ran 4 inches too far, meaning the CWT runby was
effectively 4 inches less than it should be (it should have been 18
inches, but the CWT hit when the car was 4 inches lower than the
top landing). To get 18 inches of runby, the car needs to be 4 inches
higher at the top landing. Since it's a 1:1 roping, the CWT also
, moves 4 inches. So, to correct the runby to 18 inches, the ropes
must be shortened by (18 inches desired runby + 4 inches current
excessive runby) = 22 inches.
7
You need to work on a freight door retiring cam. You have performed LOTO on
the main line disconnect, but you still detect power on the cam circuit. Which
circuit is still hot?
A) Hoistway lighting circuit.
B) Car light and fan circuit.
C) Door operator disconnect circuit.
D) Pit light circuit.
E) Control circuit for the main line.
Correct Answer: C) Door operator disconnect circuit.
Rationale: The door operator circuit often has a separate disconnect
or is powered from a different source than the main line, especially
if it operates independently for certain functions or if the main line
LOTO only disconnects the motor/controller.
8
The contractor requests that the vertical center of a Rack and Pinion hoist be
moved. How should you accomplish this adjustment?
A) By changing the motor's speed.
B) By adjusting the counterweight.
C) By adjusting the tie-downs and wall ties.
D) By shortening the hoist ropes.
E) By lubricating the rack and pinion gears.
Correct Answer: C) By adjusting the tie-downs and wall ties.
Rationale: The vertical alignment of a rack and pinion hoist is
maintained by its tie-downs and wall ties that secure the mast to
the building structure. Adjusting these elements allows for changes
in the hoist's vertical center.
with Answers 100% Accuracy | 2025 LATEST UPDATE
1
A contractor wants to increase an elevator car's speed from 100 fpm to 125
fpm. If the current sheave diameter is 12 inches, what new sheave diameter
is required to achieve the desired speed?
A) 10 inches
B) 12 inches
C) 15 inches
D) 18 inches
E) 20 inches
Correct Answer: C) 15 inches
Rationale: The relationship between car speed and sheave diameter
is directly proportional. Using the formula (Old Speed / New Speed)
= (Old Sheave Diameter / New Sheave Diameter), we calculate (100
fpm / 125 fpm) = (12 inches / X). Solving for X, X = (125 fpm * 12
inches) / 100 fpm = 15 inches.
2
You find a Metal Oxide Varistor (MOV) in a circuit has burned out. After
replacing it, you still cannot get a voltage or resistance reading. What is the
most appropriate action?
A) Replace it with a smaller MOV.
B) Replace it with a larger MOV.
C) Try to repair the burnt-out MOV.
D) Connect a jumper wire across the MOV terminals.
E) Disregard the MOV; it's not essential.
Correct Answer: B) Replace it with a larger MOV.
Rationale: When an MOV repeatedly burns out, it indicates that it is
undersized for the voltage spikes it is intended to suppress.
Replacing it with a larger MOV (one with a higher voltage rating)
provides greater protection and prevents premature failure.
,3
In a Ward-Leonard elevator control system, the mechanical brake is engaged
and set, but the motor appears to be actively trying to overcome or slip
through the brake. What is the most probable issue?
A) A short circuit in the up-direction control.
B) The motor's field windings are open.
C) A "Suicide Circuit" condition is present.
D) The brake coils are drawing too much current.
E) The motor brushes are worn out.
Correct Answer: C) A "Suicide Circuit" condition is present.
Rationale: A "Suicide Circuit" in a Ward-Leonard system refers to a
control malfunction where the generator's output voltage (and thus
the elevator motor's armature current) is still present and trying to
drive the motor, even when the mechanical brake is set. This creates
a dangerous condition where the motor fights the brake.
4
When upgrading an older DC motor to incorporate a new Silicon Controlled
Rectifier (SCR) drive system, what action should typically be taken regarding
the interpoles of the DC motor?
A) Rewind the interpoles for higher voltage.
B) Leave the interpoles alone.
C) Bypass the interpoles entirely.
D) Add resistance in series with the interpoles.
E) Reverse the polarity of the interpoles.
Correct Answer: B) Leave the interpoles alone.
Rationale: When adding an SCR drive to a DC motor, the interpoles
are generally left alone. The series loop and associated resistors on
the generator are typically removed, but the interpoles are integral
to good commutation in the DC motor itself and remain.
,5
A hydraulic elevator functions correctly when running in the up direction with
no load, but fails to run when a full capacity load is placed in the car. What is
the most likely problem?
A) The down valve is stuck open.
B) The check valve is malfunctioning.
C) The relief valve is set too low.
D) The oil level in the tank is too high.
E) The motor's starting capacitor is faulty.
Correct Answer: C) The relief valve is set too low.
Rationale: The relief valve's purpose is to limit the maximum
pressure in the hydraulic system. If it is set too low, the pump will
not be able to generate enough pressure to lift a full load without
the relief valve opening and diverting fluid, effectively preventing
the car from running.
6
An elevator car with a 1:1 roping arrangement runs by 4 inches below the
top landing, hitting the Counterweight (CWT) buffer. The CWT runby should
be set at 18 inches. How much should the ropes be shortened to correct this?
A) 14 inches
B) 18 inches
C) 22 inches
D) 26 inches
E) 30 inches
Correct Answer: C) 22 inches
Rationale: The car ran 4 inches too far, meaning the CWT runby was
effectively 4 inches less than it should be (it should have been 18
inches, but the CWT hit when the car was 4 inches lower than the
top landing). To get 18 inches of runby, the car needs to be 4 inches
higher at the top landing. Since it's a 1:1 roping, the CWT also
, moves 4 inches. So, to correct the runby to 18 inches, the ropes
must be shortened by (18 inches desired runby + 4 inches current
excessive runby) = 22 inches.
7
You need to work on a freight door retiring cam. You have performed LOTO on
the main line disconnect, but you still detect power on the cam circuit. Which
circuit is still hot?
A) Hoistway lighting circuit.
B) Car light and fan circuit.
C) Door operator disconnect circuit.
D) Pit light circuit.
E) Control circuit for the main line.
Correct Answer: C) Door operator disconnect circuit.
Rationale: The door operator circuit often has a separate disconnect
or is powered from a different source than the main line, especially
if it operates independently for certain functions or if the main line
LOTO only disconnects the motor/controller.
8
The contractor requests that the vertical center of a Rack and Pinion hoist be
moved. How should you accomplish this adjustment?
A) By changing the motor's speed.
B) By adjusting the counterweight.
C) By adjusting the tie-downs and wall ties.
D) By shortening the hoist ropes.
E) By lubricating the rack and pinion gears.
Correct Answer: C) By adjusting the tie-downs and wall ties.
Rationale: The vertical alignment of a rack and pinion hoist is
maintained by its tie-downs and wall ties that secure the mast to
the building structure. Adjusting these elements allows for changes
in the hoist's vertical center.
