Electrical 😒 Flashcards
What is an RSIR motor
Resistance start induction run
What’s is a CSIR motor
Capacitor start induction run
What is a CSCR motor
Capacitor start capacitor run/ or permanent split capacitor PSC
Minimum microfarads of a start capacitor
70uF
What does ECM stage for
Electronically commutated motor
Low poles high speed?
Yes
How many electrical degrees is 4 poles?
720 degrees
What is the casing made of on a start cap?
Plastic
E peak=
Erms over 0.707
What’s higher e peak or rms?
E peak
O
- =
H
Sin
A
- =
H
Cos
O
- =
A
Tan
Pithagorium Theorem
A2+B2=C2
3 other names for real power
Active power
Power output
Volts X amps X Power=X
Another name for reactive power
volts apms reactive (VARs)
Impedance
Total opposition to current AC
3 more names for apparent power
Total power
Power input
Volts X amps=VA
How many winding in a split phase
One
How many degrees are start and run apart
90
How out of phase is a electromagnetic field produced
180 degrees son
T5 and T8
Start winding
High voltage in series?
Yes
What voltage is parallel
Low
NEMA class A?
105C
NEMA class be
130C
NEMA CLASS F
155C
NEMA class H
180C
Brake HP=
VA over .746
Auto transformer uses mutual inductance
NO
If a light burns out in parallel
Less amps
Transformers H is always
With higher voltage
