Answer Posted / ngrjbh

sorry... with out multimeter we can caluclate
IF DC current=20A , DC voltage=48v
Load=20*48 =960w
load=960w =9.6KW

Considering the same load in A.C.
load=960w, AC voltage=230v, P.F.=0.84
To find out current=?
current=load/voltage*P.F.
=960/230*0.84
=4.97A
DC current 20A = AC current 4.97A
Plz reply with new answer ngrj_bh@yahoo.co.in

Does the direction of rotation of d.c. Shunt motor would get reversed if the armature current and field current both are reversed?

1162

---

how is the cable tray designed & how its total length is calculated for an Industrial plant Say for Ex. (500KW Motor Load)

1902

---

Why do we need interlocking in a HT metering or Ring main unit switchgear?

2032

---

What are safety device in vcb and acb?

3884

---

Do closed loop systems require manual input?

1165

---

what is arc flash and what are the hazards involved

2165

---

how slip power recovery system work

3031

---

can anyone show me how the 3 phase power is supplied to socket outlets?

2030

---

ACCORDING TO IEC WHAT SHOULD BE THE MINIMUM HEIGHT OF G.I. STRUCTURE OF CT, PT, ISOLATOR, LA?

2208

---

how to select rating of HT Panel

1459

---

Can Anyone Answer anyone of these ? Q1) why direct SOLUTION of Load Flow Studies in Not Possile ? Q2)Why majority of Buses in power system are load buses Q3)Why one of the buses in Power system is taken as reference bus (slack or swing) Bus ? Q4)Bus Admittance Matrix is a sparce (means it contains some zero elements ) matrix , give reason

1919

---

How is the gain affected by the introduction of feedback in a control system.

1170

---

Between educational qualification and practical work experience, give us a brief explanation on your practical experience in your past Endeavour that you performed well to the satisfaction of your past or present employer?

2267

---

What is the difference between Delta & Wye windings?

2101

---

Why we used 690V in ACS 800 drives.Why dont use standard voltage like 415v or 1.1Kv

2460

---