which motor is suitable for traction? why?
Answer Posted / jsenthamizh
D.c series motor used in traction purpose, beacause we know
any type of d.c motor Torque is directly proportional flux
and armature current.particularly in d.c series motor
torque is directly proportional to flux and square of
armature current, so ite starting torqe is high.which
reason for d.c series motor used in traction purpose.
| Is This Answer Correct ? | 111 Yes | 9 No |
Post New Answer View All Answers
is there any role of power factor with frequency variation? and how we can manage the frequency variation?
Why you are switching off arc protection mcb when you are taking shutdown for lv board.
How PSV sizing being done
How to see the inductance in a transmission lines
WHY IS THE EARTH FAULT CURRENT ALWAYS LESS THAN THE NORMAL CURRENT??
why we testing the core balance of the transformer before comissioning?
Do you know what is dry-out test in x'mer
What is resolver and glass scale in CNC how they work?
What are the types of control system?
My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I - is the value of AC fault current. t - is the operating time of disconnecting device in seconds. K – is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.
What is mean by STUB protection?
Is electro plating what type of load whether resistive, inductive or capacitive loads
what happen when increase or decrease size of lamp,light.glass.
i applied for c licence with my one year apperents trainee and i have attaced with A grade contractor company experiance that is for 14 monts experiance this document is sufeicant for c licence? pls tell why they rejected
electrical knowelge