Answer to Question #264401 in Engineering for naz

Question #264401

A 150V, DC shunt motor drives a constant-torque load at a speed of 1500rpm. The

armature and field resistances are 2Ω and 150Ω, respectively. The motor draws a line

current of 10A at the given load.

(a) Calculate the resistance that should be added to the armature circuit to reduce the

speed by 50%.

(b) Assume the rotational losses to be 100W. calculate the efficiency of the motor without

and with the added resistance.

(c) Calculate the resistance that must be added to the armature circuit to operate the

motor at the holding condition

Expert's answer
Dear naz, your question requires a lot of work, which neither of our experts is ready to perform for free. We advise you to convert it to a fully qualified order and we will try to help you. Please click the link below to proceed: Submit order

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!


No comments. Be the first!

Leave a comment

New on Blog