1. The condition for maximum efficiency for a D.C. generator is
2. If a D.C. motor is connected across the A.C. supply it will
3. The speed of a D.C. shunt motor can be increased by
4. The armature voltage control of D.C. motor provides
5. Starters are used with D.C. motors because
6. If Ia be the armature current, then speed of a D.C. shunt motor is
7. In case of D.C. shunt motors the speed is dependent on back e.m.f. only because
8. A direct on line starter is used: for starting motors
9. The ratio of starting torque to full-load torque is least in case of
10. For starting a D.C. motor a starter is required because
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