Answer / Lavi Sahu

A current transformer (CT) is connected to the secondary winding of a power transformer to measure the current flowing through the primary circuit without actually connecting a high-voltage ammeter or other measuring device directly to the primary winding. The CT produces a proportionally lower current in its secondary winding, which can then be measured safely and accurately using an ammeter connected to the CT's secondary side (WTI stands for wattmeter test instrument).

what is XLPE cable?

2 Answers   Essar,

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what is transformer tap change HT side and LT side

1 Answers   Alstom, Sodexo,

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how many kw = one ton air condition?

2 Answers  

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How to make vector group test of transformer?

2 Answers  

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In a HT switchboard where Nos. of Transformers are connected, how to decide Incoming cable size? Whether Cable should be rated for connected load or maximum demand?

1 Answers   Power Grid,

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How PADO software increase the efficiency of power plant?

1 Answers   Avalon, SVS,

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earth also having a gravitational force (magnetic field of north and south)but it attracts any object compare to this theartifical magnetic cant perform same as earth why?

1 Answers  

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what is diffrent between plc and clc??

1 Answers  

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We use MCCB not MCB for motor starters because MCCBs has capablity to drawout the motor starting current which is 5-6 times the full load current of motor for 1sec. Then why we use SDF in starter panel means MCC panels. Pls reply if any one knows this answer.

1 Answers  

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1- XC and the RC time constant are both measures of the reaction of C to a change in ____? 2-The power factor is a numerical ratio with a value between 0 and 1 equal to the ______________ of the phase angle. 3-When V and I are out of phase because of reactance, the product of V times I is called ______________ power 4-For _____________ inductors, the branch currents can be added algebraically. 5- The ______________ power in watts can be calculated as I^2R 6-Calculate XL with L = 30mH and f = 1kHz ( I have Xl=2piFL 2*3.141592653*1kHz*30mH =188 ohms Please check) 7-A parallel RL circuit has the values, R = 5kohms, XL = 5kohms. A voltage source of Vt = 10Vrms is connected in parallel to R and L. Determine the total current, It delivered by the voltage source Vt. 8-A series RC circuit has R = 1Mohm and C = 1microF. How long would it take for the capacitor to fully discharge if it is initially fully charged? 9-A circuit has real power = 300W and an apparent power of 500VA. Determine the power factor and phase angle. 10-The time constant for an LR series circuit is T = 0.1s and R = 10ohms. Calculate the inductance L.

0 Answers  

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Is electro plating what type of load whether resistive, inductive or capacitive loads

1 Answers   Apollo,

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Why red,yellow,green colours lamps are used in the traffic control?

2 Answers   Samtel,

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