Answer / praveen kumar gupta

Bus riser is used in between two buses at same level
connected with a circuit breaker called bus coupler.In this
system one bus is connected with upper portion of the
breaker and lower portion or output of circuit breaker is
connected to bus riser who works to rise the bus on level
of first one.

Answer / raja

Bus raiser are also called as raising mains ,
To reduce cable size, no of cables, easy taping,and also
safety,
to reduce no of cables laying.

Where do we adjust the setting of thermal over load relay & how cal calulate.

1 Answers   Hilton,

---

In case of 3Phase Supply, Voltage R-Earth/Neutral - 220 Y-Earth/Neutral - 220 Z-Earth/Neutral - 220 Total is -> 660Volts Then Why it is said that 3Phase supply is 440

6 Answers   Hindustan Unilever Limited,

---

why we are using starter

5 Answers  

---

If a Power Transformer Fails and the transformer manufacturer suggest that "Do all electrical test on the transformer?". What are the test to be conducted in this condition?

5 Answers  

---

difine electrical ballast in HPSVL

0 Answers  

---

---

how choose conductor&depending upon load

0 Answers   Ford, HCL,

---

The coulomb is a unit of:(a) Energy(b) Voltage(c) Power(d) Quantity of electricity

1 Answers  

---

Is any AC drive(VFD) had a feature of DC injection braking? if available please mention the detail. i.e drive can supply braking torque when the motor in idle state.

0 Answers  

---

what is meant by leading or lagging power factor?like in capacitor power factor is leading and in inductor power factor is lagging

4 Answers  

---

How do you classify the different types of torques?

2 Answers  

---

whats the differece between Exd and Exe

0 Answers   IFFCO, TN,

---

why we use negative feedback in control system.

2 Answers  

---