Question

For a DC brush motor, if supply voltage = 200 V, Armature current = 10 Amp, and Armature resistance = 0.5 ohms, then the Eb will be …….

Answer 1

Supply voltage, $V=200\space V$

Armature current, $I_A=10\space A$

Armature Resistance, $R_A=0.5\space\Omega$

$E_b=V_T+I_AR_A$

$E_b=200+(10\times0.5)$

$E_b=205\space V$