engineering recuitment MAHATRANSCO AE Electrical Mock Test Electrical Machines DC Generators Generator EMF Equation
A 220 V separately excited dc motor takes 20 A and the armature resistance is 1.0 Ω. If the armature constant KaΦ = 1.5 Volt-sec/ rad, the speed of the motor is
1
1000 rpm
2
2000/π rpm
3
3000/π rpm
4
4000/π rpm
5
none of these