MECHANICS EXAM NEIEP
(2024/2025) QUESTIONS WITH
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The period of a sine wave is .0083 seconds. What is the frequency? - ANSWER
120 Hz
f= 1/t
With an effective value of 20.2 amps of AC current, what is the peak valu...
The period of a sine wave is .0083 seconds. What is the frequency? - ANSWER ✔
120 Hz
f= 1/t
With an effective value of 20.2 amps of AC current, what is the peak value -
ANSWER ✔ 28.6
A waveform that has unequal rise and fall times with one being instantaneous is
called a - ANSWER ✔ Sawtooth
Like Magnetic Poles - ANSWER ✔ Repel
Total Resistance is... - ANSWER ✔ always less than the resistance of any one
branch.
Current in a parallel circuit - ANSWER ✔ Is shared between branches
I= E/R for each branch.
What stays the same throughout a series circuit - ANSWER ✔ Current
, In a Wye Stator connection... - ANSWER ✔ There is a neutral or common for all
three phases.
When using a portable working platform during rail installation... - ANSWER ✔
The hoisting cable and operational controls should be inspected daily prior to using
the working platform
When laying out the rail locations for a bank of elevators... - ANSWER ✔ use the
column line to locate the two outermost rails in the bank.
When installing formed guide rails... - ANSWER ✔ the brackets do not require
any shim
What must you do when hoisting rails? - ANSWER ✔ Ensure that your rope block
or well wheel has an operational safety latch
What is a bayonet gauge used for? - ANSWER ✔ to check DBG on a T-rail
install.
What is the best fire extinguisher to cover all types of fires in the machine room? -
ANSWER ✔ ABC
What is the main function of the car overspeed governor? - ANSWER ✔ Grips the
rope which mechanically trips the car safety.
Electrical safeties must trip at ___ of mechanical tripping speed for cars that travel
above 150 to 500fpm - ANSWER ✔ 90%
The jaw side of the governor must be plumb to the... - ANSWER ✔ Releasing
carrier of the car.
overspeed down condition
Governors must be tested - ANSWER ✔ every 5 years with rated load at rated
speed in the down direction
Group Controllers - ANSWER ✔ coordinate the movement of multiple cars.
,If a gearless machines drive sheave has a circumferance of 6 feet, approximately
how many RPMs would be required of the drive motor to run 800fpm - ANSWER
✔ 133
On a geared worm machine, where must the oil level be kept? - ANSWER ✔ At
the center of the worm shaft`
Which drive groove confirguatrion requires the use of a double-wrapped
secondary sheave? - ANSWER ✔ U Groove
What devices would you use to prevent the machine bedplate from lifting on one
end as the elevator starts or stops? - ANSWER ✔ Tie downs
If you had a 14,500lb machine to lift up the hoistway, what kind of reeving would
be used for a 4,000lb capacity portable gas hoist? - ANSWER ✔ 4 to 1
What's the advantage of lang lay ropes over regular lay rope? - ANSWER ✔ They
are most flexible
When using rope wedge sockets... - ANSWER ✔ Use a wedge and socket sized
correctly for the rope.
If a hoist machine roped 1:1 is capable of running at 650fpm with a capacity of
4500lbs, what would the capability be if roped 2:1? - ANSWER ✔ 325 fpm at
9000lbs
More torque. Less speed. Double the reeve, double the weight and half the speed.
What rope has wires preshaped to fit the twist in the strands and preshaped to fit
the twist in the ropes? - ANSWER ✔ Preformed
What is it called when a load is added to a wire rope,it stretches, and when the
load is removed, it returns to its original length? - ANSWER ✔ Elastic Stretch
What wire rope construction is the most wear resistant? - ANSWER ✔ 6 x 19
Seale
, What is the construction stretch of a 500ft fiber core, 8 strand rope rated at 3/4%
(.0075) of rope stretch per hundred foot? - ANSWER ✔ 3.75FT
500 x .0075=3.75
Which lay of wire rope has the strand wires in line with the rope axis? - ANSWER
✔ Regular Lay
At what speed should counterweight safeties be set to trip? - ANSWER ✔ UP TO
10% higher than the car governor
What type of safety uses an oil buffer btween the car and safety planks? -
ANSWER ✔ Type C
If you have a 3500lb car rated at 4000lbs capacity, how much should the
counterweight assembly weigh for a normal 40% install? - ANSWER ✔ 5100lbs
When an occupiable space below the pit, what additional equipment is required on
the counterweight? - ANSWER ✔ Safeties
What functions can load weighing transducers perform? - ANSWER ✔ Adjust
door times, bypass hall calls, and adjust motor control.
How high would you block up a counterweight frame before roping that had a
counterweight buffer height of 32", rope stretch of 12"; bottom counterweight run
by of 18"; and pit depth of 8 feet? - ANSWER ✔ 62 inches
What document may be the only place to look for information such as the type of
fixtures, car panel, fire service floor, etc? - ANSWER ✔ Job abstract
Which type of diagram shows the simplified path from positive to negative for all
components in a circuit - ANSWER ✔ Straight Line
What term best describes typing all metal parts at ground potential to minimize
electrical shock hazards? - ANSWER ✔ Bonding
When bending conduit, what is the maximum number of degrees of bend allowed
between access points? - ANSWER ✔ 360 degrees
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