why field resistance is higher than armature resistance in
dc machines? and why filed resistance is kept at min value
at starting in same time of armature resistance at max value?
Answer Posted / abdelbaset
because the consumable power in the field circuit assuming
the same voltage of the main circuit is lower than the
armature circuit. so the excitation current is lower than
armature current so field resistance is greater than
armature resistance
| Is This Answer Correct ? | 11 Yes | 16 No |
Post New Answer View All Answers
Define the term factor of inertia.
Why to keep capacitor bank off while generator running.
How to calibrate or test an LT Air Circuit breaker 440 volts, 35 KA, 800 Amps ?
Make a list observation on Transformer?
What is the application of Dyn1 and Dyn11 vector group of transformer?
I'm looking for a softcopy manual set for a Credence ASL- 3000. Anyone know where I can get it?
i had aplied Hindustan Petroleum corporation limited for the post of maintenance technician -Electrical,i want model questions,if anybody have please send it or please advice?
why generator efficiency is more in swinburnes test?
WHAT IS DIFFERENCE BETWEEN MANUAL CONTROL AND MAGNETIC CONTROL AND STATE ITS ADVANTAGE /DISADVANTAGE
What is the reason for using a GE G101 MCB in place of an EP102 MCB if both are capable of AC circuit protection?
how to design coil turns ?
During Starter Panel Com missing I Found The Main Incomer 40Amp MCB 10KA Trip When Motor Change Star To Delta Motor Rating 20HP BUT When We Use Same MCB To Other Motor It Does Not trip Or What Is Necessaries for Star Delta Starter MCB SFU MPCB OR MCCB And What are The Breaking Capacity of MCCB in the Motor above 15HP
what is mathed of check the D.C MOTOR 181 KW (ARMATURE AND FIELD) WHAT IS THE MATHED OF CHECK THE THYRISTOR MODULE (HIGH CURRENT)
The slip during plugging operation is given by= A 1-s B 2+s C 1+s D 2-s
What is the function of interposing current transformer?