what is LDR used in street light

2 Answers   Cipla, Ram Infotech, Wipro,

---

now a shunt motor is practically a constant speed motor , then how does it meet the increase or decrease in the load ?

1 Answers  

---

I have tow 200 KVA UPS, both are in parallel mode.My question is that, both are running on battery when power fail, if one of them fail (Eg rectifire fails or some other reason), at thet time reverse power will come to faild ups if it comes then it will harm to failed ups or not? if not then how it protects to faied ups????????????????

1 Answers  

---

how the B-H loop obtain under the static condition

0 Answers  

---

which type of motor is suitable for water pump?

1 Answers   IIM,

---

explain the existence of reactive power in electrical engg?when it generates?

1 Answers  

---

wwht is wave trap used in ht line

4 Answers  

---

Input power is 380 - 450 V but with 45 - 55 Hz frequency - desired output is 415 V and 50hz with 1% variation permissible. CVT / Servo dont stabilize the Frequency - what is best solution??

7 Answers   IOCL,

---

What does Magnetic Neutral Axis

2 Answers   Eskom, Genus, Lanco,

---

What is the drawback of class b amplifier?

0 Answers  

---

The efficiency of a 100kva transformer is 0.98 at full load as well as half load , for this transformer what is the Copper loss at full load ?

0 Answers  

---

why two windings are using in single phase AC motor

3 Answers  

---