Ward-Leonard controlled D.C. drives are generally used for _____________________ excavators?

Related Mcqs:

Light duty cranes are used in which of the following ?

A. Power houses B. Pumping stations C. Automobile workshops D. All of the above...

When the load is above _______________ a synchronous motor is found to be more economical?

A. 2 kW B. 20 kW C. 50 kW D. 100 kW...

Reluctance motor is a________________?

A. variable torque motor B. low torque variable speed motor C. self starting type synchronous motor D. low noise, slow speed motor...

Battery operated scooter for braking uses________________?

A. plugging B. mechanical braking C. regenerative braking D. rheostatic braking...

Which of the following motors has series characteristics ?

A. Shaded pole motor B. Repulsion motor C. Capacitor start motor D. None of the above...