Follow Our FB Page << >> for Daily Laughter. We Post Funny, Viral, Comedy Videos, Memes, Vines...

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....

Answers were Sorted based on User's Feedback

A separately excited dc motor having 2 ohm armature resistsance draws a current of 10A and torque ..

Answer / sandeep prabha

any clu... Thanks in advance

Is This Answer Correct ?    4 Yes 0 No

A separately excited dc motor having 2 ohm armature resistsance draws a current of 10A and torque ..

Answer / dharannya

Basic separately excited motor equations are


from the first set of data ie Ra=2, Ia=10 T=20,
and from equation (3)
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

More Electrical Engineering Interview Questions


0 Answers  

Why compensation is necessary in feedback control system?

0 Answers  

How to set the star delta timer setting?

1 Answers   Integra,

without any theoretical calculations, can u approximately tell the current rating of a motor(above 30hp)working at 415VAC.

7 Answers  

what are the functions of current transducer and voltage transducer?

1 Answers   MEL,

Why transformer is not rotating?

20 Answers   BARC, Nerolac,

we all know voltage is a force(emf), and the force always devides if 2 or more than2 loads are there but why does the voltage remains same is parallel, it must devide na ???

0 Answers   NTPC,

How to determine alternating current frequency?

0 Answers  

What is water cooled chiller plant?

1 Answers   Gulf, IOCL,

The metal-enclosed switchgear and controlgear is subdivided into three types: 1. metal-clad switchgear and controlgear; 2. compartmented switchgear and controlgear 3. cubicle switchgear and controlgear. What is the main differnence between them. State some example.

0 Answers  

Suppose an electric motor with a controller is not working. What is the sequence of testing you will do in your troubleshooting?

2 Answers   Emerson,

what is the other name of dc series motor

2 Answers  

  • Civil Engineering Interview Questions Civil Engineering (5076)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4445)
  • Electrical Engineering Interview Questions Electrical Engineering (16606)
  • Electronics Communications Interview Questions Electronics Communications (3915)
  • Chemical Engineering Interview Questions Chemical Engineering (1092)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (214)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (258)
  • Instrumentation Interview Questions Instrumentation (2992)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (123)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (0)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1378)