♡ Login
Home
Previous Papers
★
MCQs
Electrical Engineering
DC Machines
the dummy coils in DC machines are ...
Que.
the dummy coils in DC machines are useful to
A.
increase the efficiency
B.
improve the commutation
C.
reduce the cost of machine
D.
maintain mechanical balance of armature
Right Answer is :
✓ D. maintain mechanical balance of armature
⚑ Report
Views 👍 :3.5K
Share :
Copy ☍
✒ To discuss this topic
Comment
✕ Cancel
➤ Post Comment
❖ Related Questions
➣ the main factor that leads the unstable ...
➣ in case of DC series motor it ...
➣ The armature of a DC machine is ...
➣ a generator may loose residual magnetism due ...
➣ in case of DC motor, maximum mechanical ...
➣ stray losses are sum of ...
➣ which of the following are the variable ...
➣ welding generator will have ...
➣ which of the following DC motors will ...
➣ The principle of dynamically induced EMF is ...
❖ Take a qick MCQ Test on
➤ AC Basics and Networks
➤ Switchgear and Protection
➤ Electrical Installation and Wiring
➤ Power Electronics
➤ Synchronous Machines
➤ Induction Machines
➤ Microprocessors
➤ Electrical Energy Utilisation and Electric Traction