MMET 301 Exam 1 questions with
answers rated
Friction - correct answer ✔✔Causes a moving object to want to stop moving
Friction stops the object from moving by pushing in the ______ direction - correct answer ✔✔opposite
Torque equation - correct answer ✔✔Force x Distance
What is RPM - correct answer ✔✔is used to measure the rate of rotation of anything that is turning
What is work - correct answer ✔✔the transfer of energy to a body by the application of a force that
moves the body in the direction of the force
Work equation - correct answer ✔✔Force x distance
What is power - correct answer ✔✔the measure of the rate at which work is done
Units of Power - correct answer ✔✔HP or Watts
1 HP in lbs-ft/min - correct answer ✔✔33,000
1 HP in kw - correct answer ✔✔0.746
1 HP in lbs-ft/sec - correct answer ✔✔550
Shaft power is characterized by - correct answer ✔✔Torque and speed
, Most important formula in the power transmission/motion control industry - correct answer ✔✔HP = T x
RPM / 63025
Flow of electrons is - correct answer ✔✔electric current
Electric generators produce ____ voltage electricity - correct answer ✔✔low
Most common voltage for homes - correct answer ✔✔115 or 230
Single-phase meaning - correct answer ✔✔one voltage waveform is applied to the motor
What is more efficient? single or three phase - correct answer ✔✔three phase
Can single and three phase motors be interchanged? - correct answer ✔✔No
2 parts to AC motor - correct answer ✔✔Rotor and stator
Stator - correct answer ✔✔- stationary outer shell of the motor
- contains windings which transform the incoming electricity into a magnetic field
- causes rotor to become magnetized in opposite polarity which makes it rotate
- has poles (rpm)
Rotor - correct answer ✔✔- aluminum or copper bars
- bars create magnetic field in rotor
Synchronous speed - correct answer ✔✔rotational speed of stator's magnetic field
- Ns = 120f/p
Difference between Synchronous speed and actual rotor speed - correct answer ✔✔slip
answers rated
Friction - correct answer ✔✔Causes a moving object to want to stop moving
Friction stops the object from moving by pushing in the ______ direction - correct answer ✔✔opposite
Torque equation - correct answer ✔✔Force x Distance
What is RPM - correct answer ✔✔is used to measure the rate of rotation of anything that is turning
What is work - correct answer ✔✔the transfer of energy to a body by the application of a force that
moves the body in the direction of the force
Work equation - correct answer ✔✔Force x distance
What is power - correct answer ✔✔the measure of the rate at which work is done
Units of Power - correct answer ✔✔HP or Watts
1 HP in lbs-ft/min - correct answer ✔✔33,000
1 HP in kw - correct answer ✔✔0.746
1 HP in lbs-ft/sec - correct answer ✔✔550
Shaft power is characterized by - correct answer ✔✔Torque and speed
, Most important formula in the power transmission/motion control industry - correct answer ✔✔HP = T x
RPM / 63025
Flow of electrons is - correct answer ✔✔electric current
Electric generators produce ____ voltage electricity - correct answer ✔✔low
Most common voltage for homes - correct answer ✔✔115 or 230
Single-phase meaning - correct answer ✔✔one voltage waveform is applied to the motor
What is more efficient? single or three phase - correct answer ✔✔three phase
Can single and three phase motors be interchanged? - correct answer ✔✔No
2 parts to AC motor - correct answer ✔✔Rotor and stator
Stator - correct answer ✔✔- stationary outer shell of the motor
- contains windings which transform the incoming electricity into a magnetic field
- causes rotor to become magnetized in opposite polarity which makes it rotate
- has poles (rpm)
Rotor - correct answer ✔✔- aluminum or copper bars
- bars create magnetic field in rotor
Synchronous speed - correct answer ✔✔rotational speed of stator's magnetic field
- Ns = 120f/p
Difference between Synchronous speed and actual rotor speed - correct answer ✔✔slip
