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Electrical Engineering

What is excitation current or magnetising current in Transformer?

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What is excitation current or magnetising current in Transformer?

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What is the purpose of loss of excitation protection in generators?

What is the purpose of loss of excitation protection in generators?

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What is the purpose of a loss of excitation protection scheme using impedance measurement?

What is the purpose of a loss of excitation protection scheme using impedance measurement?

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How does an impedance-based loss of excitation protection scheme work?

How does an impedance-based loss of excitation protection scheme work?

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How does a loss of excitation protection scheme work for generators?

How does a loss of excitation protection scheme work for generators?

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in Electrical Engineering

What is excitation?

What is excitation?

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Write the excitation table for T-FF.

Write the excitation table for T-FF.

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Explain the effect of variable excitation on the behaviour of synchronous motor under constant load condition.

Explain the effect of variable excitation on the behaviour of synchronous motor under constant load condition.

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Is transformer in AC or DC?

Is transformer in AC or DC?

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Is transformer in kVA or kW?

Is transformer in kVA or kW?

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What is a current transformer used for in SMPS?

What is a current transformer used for in SMPS?

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What are eddy current losses in a transformer?

What are eddy current losses in a transformer?

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How does a current transformer (CT) differ from a voltage transformer (VT) in protection systems?

How does a current transformer (CT) differ from a voltage transformer (VT) in protection systems?

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in Electrical Engineering

Why hysteresis and eddy current losses occur in a transformer?

Why hysteresis and eddy current losses occur in a transformer?

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How eddy current loss can be minimized in transformer?

How eddy current loss can be minimized in transformer?

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How can eddy current losses in a transformer core be minimized?

How can eddy current losses in a transformer core be minimized?

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How do we reduce eddy current losses in transformer?

How do we reduce eddy current losses in transformer?

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How to reduce hysteresis loss and eddy current loss in transformer?

How to reduce hysteresis loss and eddy current loss in transformer?

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How can eddy current be minimised in transformer class 12?

How can eddy current be minimised in transformer class 12?

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What are eddy current losses in transformer?

What are eddy current losses in transformer?

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How is the effect of eddy current losses in transformer reduced?

How is the effect of eddy current losses in transformer reduced?

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How to reduce eddy current loss in transformer?

How to reduce eddy current loss in transformer?

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What is the effect of eddy current loss in transformer?

What is the effect of eddy current loss in transformer?

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What do hysteresis and eddy current losses depend upon in a transformer?

What do hysteresis and eddy current losses depend upon in a transformer?

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A 220V/22kV three-phase transformer is connected in star/delta. The protective transformers on the 220V side have a current ratio of 400/5. Calculate the CT ratio on the 22kV side.

A 220V/22kV three-phase transformer is connected in star/delta. The protective transformers on the 220V side have a current ratio of 400/5. Calculate the CT ratio on the 22kV side.

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in Electrical Engineering

What is the role of a current sense transformer in a power converter?

What is the role of a current sense transformer in a power converter?

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What is the purpose of a current transformer in power electronics?

What is the purpose of a current transformer in power electronics?
Answer : A **current transformer (CT)** is used in power electronics to measure and monitor the current flowing through a conductor without having to make a direct electrical connection. It is ... monitoring of electrical currents in power systems, which is crucial for control, protection, and safety....

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What is the purpose of a current transformer in power measurement?

What is the purpose of a current transformer in power measurement?

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in Electrical Engineering

Is transformer active or passive?

Is transformer active or passive?

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What is the normal or average life expectancy of a Transformer ?

What is the normal or average life expectancy of a Transformer ?

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Select insulating materials for following parts: (i) Insulation between heating element and base plate of electric iron. (ii) Insulation used over copper or aluminium conductor used for making coils. (iii) Transformer bushings. (iv) Insulation between transmission line and pole.

Select insulating materials for following parts: (i) Insulation between heating element and base plate of electric iron. (ii) Insulation used over copper or aluminium conductor used for making coils. (iii) Transformer bushings. (iv) Insulation between transmission line and pole.

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in Electrical Engineering

How does a basic transformer step up or step down voltage?

How does a basic transformer step up or step down voltage?

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Is electronic transformer AC or DC?

Is electronic transformer AC or DC?

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Is A transformer AC or DC?

Is A transformer AC or DC?

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How to tell if transformer is DC or AC?

How to tell if transformer is DC or AC?

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Is a 3-phase transformer ac or DC?

Is a 3-phase transformer ac or DC?

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Is a transformer AC or DC machine?

Is a transformer AC or DC machine?
Answer : A transformer is an **AC (Alternating Current) machine**. This is because transformers work on the principle of **electromagnetic induction**, which only happens with alternating current. ... coil after the initial moment of current flow. Therefore, transformers only function properly with AC....

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Is a 12 volt transformer AC or DC?

Is a 12 volt transformer AC or DC?

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Is a 3 phase transformer AC or DC?

Is a 3 phase transformer AC or DC?

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Is transformer output AC or DC?

Is transformer output AC or DC?

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Is my transformer AC or DC?

Is my transformer AC or DC?

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in Electrical Engineering

Is a transformer AC or DC?

Is a transformer AC or DC?

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Is a 12V transformer AC or DC?

Is a 12V transformer AC or DC?

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in Electrical Engineering

Is electrical transformer AC or DC?

Is electrical transformer AC or DC?

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What is a current transformer?

What is a current transformer?

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What is the danger of open-circuiting a current transformer secondary?

What is the danger of open-circuiting a current transformer secondary?

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What is the purpose of a constant-current transformer?

What is the purpose of a constant-current transformer?

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How does a current differential protection scheme handle current transformer ratio mismatch?

How does a current differential protection scheme handle current transformer ratio mismatch?

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How does a current differential protection scheme handle current transformer saturation?

How does a current differential protection scheme handle current transformer saturation?

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What is the difference between a voltage transformer and a current transformer?

What is the difference between a voltage transformer and a current transformer?

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in Electrical Engineering

Explain the working principle of an optical current transformer.

Explain the working principle of an optical current transformer.

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