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
- 5516 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
How to calculate of maximum demand if given 628kw, 785kva, 0.8 p.f.
The Q-facr o of a coil given as wL/R. what will be shape of Q versus frequency graph.
What is the important precuations need tocarried out while working with Electrolite in Battery PM?
what is the voltage between earth & neutral in 3 phase electrical connection.
what is meant by CT`s saturation ? Can we use Metering CT`s with Protetection CT`s ?
A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n)?
What is the difference between isolators and electrical circuit breakers?
pls tell what are doing the three phase motor star and delta connetion with circuit diagram and control wiring .
What will be the diameter of pipe between conservation tank and transformer
Draw the equivalent circuit of crystal oscillator?
What is the limitation of kirchoffs law?
How do i carry out or know the vector group of a Dyn1 and Dyn5 transformer
why the earth is taken minimum in supplying? wather it the proportional factor to getting work any equipment or a power plant?
Describe the test procedure to determine the vector group
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
