Interested to Buy Any Domain ? << Click Here >> for more details...
A separately excited dc motor having 2 ohm armature
resistsance draws a current of 10A and torque developed is
20 Nm under rated field condtion. the speed of the motor
under the rated field condtion , when it is connected to a
100V DC source and delivering 10Nm torque....
- 2 Answers
- 5508 Views
- DRDO, I also Faced
- E-Mail Answers
Answer Posted / dharannya
Basic separately excited motor equations are
V=E+Ia*Ra-------------(1)
E=K*W-----------------(2)
T=K*Ia----------------(3)
from the first set of data ie Ra=2, Ia=10 T=20,
and from equation (3)
20=K*10
therefore K=2.
with this knowledge of K
continuing to 2nd set of data ie V=100 and T=10
again from eqn(3) we get Ia as 5A
knowing Ia Ra and V from eqn (1) we get E as 90V
from eqn(2) knowing the values of E and K we obtain w(omega,
ie speed) as 45 rad/sec or 416.67 rpm
| Is This Answer Correct ? | 1 Yes | 2 No |
Post New Answer View All Answers
What is corkscrew rule?
What is the slip speed?
What is the function of capacitor in electrical circuits?
What will happen if i used 11KV earth ht kit to 11 KV / 11 KV cable termination?
What is EMC filter in VVVF Drive ?
what do u understand about FACTS? how they are useful?
substation+ plc system
How I calculate the ELCB for circuit breakers?
How much inductance or resistance require as a starter in series with induction motor of specific capacity(e.g. 5 hp) ? What is formula for it ?
What does the term power factor shows?
A Generator is in running condition and Rotor earth fault alarm is coming.How to check on line(i.e in running condition) whether there is actual earth fault in rotor or not.
detailed procedure how we calculate cost for pcc m10 and rcc m20 including centering and labour excluding steel/ iron
What is installed in PAC that is control the humidity
In the formula : Knee point voltage = Burden X alf / class, Please inform what is alf? regards Shashidhar M.R.
HOW TO WRITE A QUENTION ANSWER? I MEAN SHORT OR LENGHTHY ? OR FROM THE BOOK AS BOOK..... SOME TIME WE GIVE A ANS FROM THE BOOK AS LIKE BOOK ND WE GET MINIMUM 60% MARKS OR MORE THEN....... THEN HOW TO FILL THE Q-PAPER?
