Formulas Flashcards
1
Q
Torque
A
T=F • r
2
Q
Pout
A
Pout= T•n/ 9.55
3
Q
HP
A
HP= T • n/ 7121
4
Q
Efficiency
A
Eff: Pout • Pin
5
Q
Pin
A
Pin= Pout + losses
6
Q
1Hp to Pout
A
1Hp • 746
7
Q
Nsyn
A
Nsyn= 120 • f. / N
8
Q
Ns
A
Ns= Nsyn - Nr
9
Q
S
A
S= Ns/ Nsyn
10
Q
Xr
A
Xr= S • Xbr
11
Q
Fr
A
Fr= S • Fbr
12
Q
Er
A
Er= S • Ebr
13
Q
Zr
A
Zr= (square root) Rr^2 Xr^2
14
Q
Ns when given slip
A
Ns=Nsyn • slip
15
Q
Ir
A
Ir= Er / Zr
