Answer Posted / akash pandey

if a transformer is of X VA then it means that this is the
burden of secondary side and also we knoe that this output
power is limited by the losses namely the core loss
depending on V and ohmic losses depending on I hence the
rating is given in VA. Consider a case where the power
factor of the load is ZERO hence the power delivered will be
zero but losses will still be there ...hence the output
varying with the condition ...but whats constant is VA.

how can motor both beasrings insulation resistance can be check?

1972

---

we have an energy meter in a capacitor bank panel, So should we consider it's readings as energy consumption on daily basis. (when capacitor bank doesn't have any energy losses)

2328

---

1)we have 1000 cfm Blower,Dia-1Mtr,Velocity of air 94 m/s 2)We have Natural Air velocity 94m/s 3If i Put Wind Mill in natural air ,speed is 94m/s Then it will generate Assume 100kw 4)If i put same wind mill across the Blower,air speed is same 94m/s now the Question is Will it generate 100 kw?

1948

---

what is method for testing CT

2091

---

how to calculate current carring capacity of cable and cable selection? 1) copper flexible cable 2) copper armoured cable 3) Aluminium cable

1545

---

why does a dc machine has high efficiency while working as a generator than as a motor ..

1943

---

List examples of current sources?

1064

---

State kirchoff voltage law?

1080

---

What is the power factor of an alternator at no load?

1272

---

How many types of colling system it trformers?

1133

---

I want to replace the 3 KW DC motor with AC motor so what should be the rating of AC motor? Details Of DC motor to be changed with AC are - Kw - 3, Vf - 310, If - 0.15, Va - 400, Ia - 13, RPM - 2400

1774

---

what is the meaning of impedance protected in instrument cooling fan

3433

---

what is under coal gassification?

2017

---

which type of amplifiers are used in multimete?

2146

---

How to calculate per unit impedance of transformer?

2121

---