what will happen if frequency is below 50 hz?

0 Answers   Student,

---

what is encoder & its use?

1 Answers   ACC,

---

what are the names of oil used in transformer and its chemical name?

11 Answers   Bhel, CSEB,

---

If a current -8+6sin6t is flowing three ammeter, one is a centre zero PMMC meter, one is true rms meter and one is moving iron meter. What are the reading of these three meter respectively?

0 Answers   National Insurance Company Limited,

---

why should be the frequency is 50 hz only why not others like 45, 95 56 or anything , why should we maintain the frequency constant if so why it is only 50

3 Answers  

---

Explain what is clipper and clamper circuits?

0 Answers  

---

What is true sine wave or pure sine wave inverter?? Is it sine wave or step wave?? If it is step wave, waves with how much step is considered as pure sine wave? Is it possible to produce pure sinewave using power electronics?

0 Answers  

---

what material is used in capaciter

0 Answers  

---

1) why a dg set shows variation of power factor and load when synchronised with other dgs? 2)Why the load sharing is not become equal in all dgs?. 3)When a dg set will not run on auto start?

0 Answers  

---

what is role of mpu in dg

1 Answers  

---

WHAT IS NORMAL VECTOR GROUP USED FOR DESIGNING OF TRANSFORMERS??

11 Answers  

---

AIR GAP IS TERMED AS USEFUL. WHY?

5 Answers  

---