Answer / venu

DC series motors are widely used where we require high
starting torque particularly in lift/elevators

Answer / ramarpandi

yes

Answer / vinod kumar.g

yes Dc motors are widely used because of their high
starting torque.

Answer / murugesan

yes

Answer / prem sutesh

one of the application which is used in the DC series motors. which have high starting torque.

Answer / sathish kumar

nowadays, 3 phase induction motors are used because of
latest deveopments and controlling motors with vvvf drive..
(variable voltage and variable frequency)...

Answer / kk

YES

Answer / monu

dc series moto with regenrative braking

When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<

0 Answers   Lupin,

What is maximum permissible length of cable from transformer (33kV/0.433kV) HT side to HT panel which contain VCB? In which standard i shall get this information.

6 Answers   MSEB,

which MPU register provides the address from which the next instruction byte is to be fetch?

1 Answers  

What are the classification of Servo Motor?

4 Answers   BARC,

what is ratio test?

1 Answers  

the distance from my office to d.g is aprox 400mtrs and voltage drops ibn my office near about 40 volt what should i do p[ls suggest.

4 Answers  

What will be the resultant out put voltage when two different voltage rating batteries are vconnected in parallel? pls. answer with example if available.

1 Answers  

What is the diff btw Conventional & Addressable Fire Alarm System???

5 Answers   Emerson,

i am confused about generator. i have generator of 380 KVA that is 304 KW by that formula KW=KVA*0.8... then by this formula I=KW/V*1.732*0.8 the amperes are 528.673. so that is the load which i put on one phase of generator or this is total 3 phase load on Generator.......

3 Answers   Haliburton,

What is the basic difference between the electrical engineering and electronic engineering?

4 Answers  

How many types of losses occur in a transformer?

0 Answers  

How to test and satisfy the conditions of the vector group YNd1 for power transformer?

1 Answers   Areva,