Answer / karthik raman.b

motor back emf Eb is directionally proportional to speed if it
is 0 then Eb also 0 since input current directly flow to the
armature winding it has very low resistance so there will
winding fault will occur

Answer / siri

as n=0,THAT MEANS AT STARTING,IF THE MOTOR TAKES HIGH
CURRENT THE WINDING MAY BURN

what is surge arresters ?........

7 Answers  

---

In generating stations which we generate current or voltage if it is voltage then how it will convert to current and power?

2 Answers   NIT,

---

1. What is maximum permissible distance between smoke detectors ? 2. How do we decide number of smoke detectors required in a large office, warehouse, hall etc ? 3. What should be maximum height of smoke detectors ? 4. Where do we use heat detector, optical smoke detector, temperature sensitive detector ?

0 Answers  

---

how i caculate the cable size for power factor correction unit for example 300kvar

1 Answers  

---

How to conduct the Magnetic Balance test on Power Transformer?

0 Answers  

---

---

Suppose i Have an Ac motor of 25Hp 1500 Rpm 50 Hz Can i run a motor 2500 Rpm by AC drives by increasing a frequency either it safe or not ....

2 Answers  

---

for compensate 315mh inductance ,how many capaciance required?

0 Answers   Mitsubishi,

---

What are the conditions to be satisfied before connecting two DC generators in parallel?

9 Answers   Bhel, Godrej,

---

advantage and disadvantage of team work?

0 Answers   Ethio Telecom,

---

we specify current in case of feeder but in case of distributor voltage, why?

0 Answers  

---

what is the name of the oil is used in transformer?

5 Answers  

---

Which type of moter is used in trains, what is the ratting of supply used explain Working principal?

2 Answers  

---