Elevator mechanics exam with Answers.

Elevator mechanics exam with Answers
Question 1
What's the equation for the volume of the cylinder?

Correct Answer
V (volume)= pi multiplied by R squared multiplied by the height
Example: radius is 6" height is 30
V=3.1416•6•6•30



Question 2
A drill draws a current (I) of 4.5 amps and resistance of 16.0 ohms, how do You find
the power(watts)?
Correct Answer
P=I squared (amps) multipled by R(resistance)
Example:P=4.5•4.5•16.0
4.5•4.5=20.25
20.25•16.0=324
P=324



Question 3
What is the equation for distance?
Correct Answer
D=R•T
D(distance=R(rate) multiplied by T(time)



Question 4
What is the equation for pressure?
Correct Answer
pressure = force/area
P(pressure)= F(force) divided by A(area)




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,Question 5
What is the equation For voltage?
Correct Answer
E=I•R
voltage (E) = current(I) x resistance(R)



Question 6
What is the equation for current or amps (i)?
Correct Answer
I=E/R
i (current in Amps)
R=(resistance in ohms)
E(volts)



Question 7
What is the equation for series voltage?
Correct Answer
Et=E1=E2=E3
ET(total voltage)



Question 8
What is the equation for series resistance?
Correct Answer
Rt=R1+R2+R3
R=resistance



Question 9
What is the equation for series current?

Correct Answer
It=i1=i2=i3
it=total current in amps
I=current in amps




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, Question 10
How do you calculate resistance of a wire?
Correct Answer
R=P•L/A
R=resistance of the wire
P= resistivity constant of the wire
L=length of the wire
A=cross sectional area of the wire



Question 11
What is the equation for parallel voltage?
Correct Answer
Et=E1=E2=E3
E=voltage
ET=total voltage



Question 12
What is the equation for parallel current?
Correct Answer
iT=i1+i2+i3
I=current in amps
iT=total current in amps



Question 13
What is the equation for parallel resistance?
Correct Answer
RT= 1 divided by 1/R1 + 1/R2 +1/R3
Add each fraction (1/R1-1/R3)
Divide the answer of each resistance by 1
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