Which among the following controls the speed of D.C. motor?
A. Galvanometer
B. Gauss meter
C. Potentiometer
D. Tachometer
Answer:D
Which among the following controls the speed of D.C. motor?
A. Galvanometer B. Gauss meter C. Potentiometer D. Tachometer
Explanation: D.C. motor is the motor which operates with the direct current as in the construction of DC motors slip rings not commutators and tachometer control the speed of DC motor.