railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Single Phase Motor and Special Machines Single Phase Motor Types
Let Ra, Rm, Xa, Xm be resistance of auxiliary winding, resistance of main winding, inductive reactance of auxiliary winding, and inductive reactance of main winding. Which of the following best represents relation between Ra, Rm, Xa, Xm for a split-phase induction motor?
1
\(\rm \frac{R_a}{X_a}<\rm \frac{R_m}{X_m}\)
2
\(\rm \frac{R_a}{X_a}=\rm \frac{R_m}{X_m}\)
3
\(\rm \frac{R_a}{X_a}>\rm \frac{R_m}{X_m}\)
4
\(\rm \frac{R_a}{X_a}=\rm \frac{R_m}{X_m}=1\)