Answer / abdullah al baki

You can do it in 2 ways. 1. You can connect a 3-phase P.F meter and see the reading directly. OR 2. You can measure the P & Q by using watt and VAR meter per phase and add them in complex (phasor) form to get the total P.F.

What are the transformer losses?

0 Answers  

---

Why a motor blower cobination draw more current at winter than summer?

1 Answers  

---

what type of motor is used in washing machine

8 Answers  

---

We know that, in case if there is a faulty insulation,or sc, the current is bypassed to earth through the earth wire that has low resistance.Actually, what will happen to that current that flows through gnd?In that case,if we come in contact with that faulty appliance, wont that current flow through us as we form a closed path by standing in gnd?Is grounding a safety measure?

3 Answers  

---

what is derating factor in Cable ? how we minimise this?

18 Answers   Bhel, College School Exams Tests,

---

how much current does 3ph. 10 hp ac motor draw.

8 Answers  

---

As we know that during saturation test of CT from secondary side, the current in secondary shoots up after core saturation. How core saturation effects the secondary current?

2 Answers  

---

stand by earth fault protection (51G) for transformer rating 2000 kVA,Dyn11,33/0.400 V. LV NCT ratio and necessary resistor and metrosil values how to calculate

0 Answers  

---

How many types of protection relays are there based on the characteristic?

0 Answers  

---

What is meant by earthhing of a magnetic flow meter and when to use empty pipe detection?

0 Answers  

---

Q) Write VBscript code along with QTPscript code in QTP tool for below scenario 1. Launch yahoo site(i know) 2. Do loogin(i know) 3.Click inbox link(i know) 4.Go to every page of mail box and count no.of read mails and no.of unread mails(i know) 5.Store page numbers, read mail count and unread mail count in a new excel file sheet 6.Create 10 types of graphs on that data 7.Do logout and close site(i know) 8.Save new excel files with graph

0 Answers  

---

what is a synchronizing lamp ?

0 Answers  

---