Answer / hareesh k.s.

dc series motor can work in ac also.while connecting to ac
there is change in flux due to the alternative nature of
the ac supply, that cuts by the armature which results the
rotation of the armature.

Answer / masoom raza

in ac both polarity changes which changes the flux and current
direction in field and armature simultaneously. as torque is product of flux and current(in armature)is always positive hence it will rotate in one direction only.for this series motor is also called universal motor.

what will be the minimum megger value for 132 Kv (earthed) potential transformer

3 Answers  

---

How to improve fuel cell in a distribution system?

0 Answers  

---

A 100 kVA , 400 v/250 kv testing transformer has 8% leakage reactance and resistance on 100 KVA base . A cable has to be tested at 500 kv using the above transformer as a resonant transformer at 50 hz . if the charging current of the cable at 500 kv is 0.4 A find the series inductance required . Assume 2% resistance for the inductor to be used and the connecting leads . Neglect dielectric loss of hte cable . what will be the input voltage to the transformer ?

0 Answers   L&T,

---

features of hbc fuses

0 Answers  

---

Hello,l am complete dip and i was working maintance in ht dep again i study b.e completed again one year exp in ht totally two year i am ealigble in c license

1 Answers  

---

What is the previous name of Cox's Bazar

0 Answers  

---

why distribution transformer are of DY11 type?

4 Answers  

---

What is the purpose of stablization resistor in high impedance bus bar protection

0 Answers   Jindal,

---

what is meant by PU value ? anyone can you explain briefly to me ?

3 Answers  

---

what is auxilliary transformer??

3 Answers   Bhel,

---

What is Surge Capacitor? Why it is require in Generator Circuit Breaker,inspite of surge arrester?

0 Answers  

---

how you configure motorvision relay (L&T make)from DCS

0 Answers   Ispat,

---