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Which type of oil is used as a transformer oil?

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Which type of oil is used as a transformer oil?

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Which type of transformer is used in AC?

Which type of transformer is used in AC?
Answer : In AC (alternating current) systems, **two main types of transformers** are commonly used: 1. **Step-up Transformer**: This transformer increases the voltage from the primary side ... power distribution and for adapting voltage levels according to the needs of different devices or systems....

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Which oil is used in transformers?

Which oil is used in transformers?

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What type of resistor is used as a thermistor?

What type of resistor is used as a thermistor?

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What is the purpose of transformer oil?

What is the purpose of transformer oil?
Answer : Transformer oil serves several important purposes in electrical transformers: 1. **Insulation**: Transformer oil provides electrical insulation between the transformer's internal components, such as the ... , but synthetic oils or esters are also used in some cases for specific applications....

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State the causes for dielectric failure of highly purified transformer oil.

State the causes for dielectric failure of highly purified transformer oil.
Answer : Dielectric failure of highly purified transformer oil can occur due to several reasons, despite the oil being purified. Here are the main causes: ### 1. **Contamination** - ** ... chemical changes. Proper maintenance and regular monitoring of the oil quality can help prevent these issues....

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in Electrical Engineering

What is the chemical name of transformer oil?

What is the chemical name of transformer oil?
Answer : The chemical name of transformer oil is typically **mineral oil**. It is a highly refined and purified form of petroleum oil, specifically chosen for its dielectric properties, which make it an excellent ... be synthetic or based on vegetable oils, but mineral oil is by far the most commonly used....

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How does transformer oil contribute to cooling?

How does transformer oil contribute to cooling?

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What is PCB in transformer oil?

What is PCB in transformer oil?

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Why is oil used in transformers?

Why is oil used in transformers?

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Which electrical device is being used as a potential divider?

Which electrical device is being used as a potential divider?

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Which type of semiconductor is used in tunnel diode?

Which type of semiconductor is used in tunnel diode?

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Which type of rotor is used?

Which type of rotor is used?
Answer : The type of rotor used typically depends on the type of motor in question. Here are the common types of rotors used in electric motors: ### 1. **Squirrel Cage Rotor (Induction Motors)** - ... , such as efficiency, torque, speed control, or cost. Would you like more details on any specific type?...

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Which type of MOSFET is mostly used?

Which type of MOSFET is mostly used?
Answer : The most commonly used type of MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) is the **N-channel MOSFET**. Here's why: 1. **Higher Electron Mobility**: N-channel MOSFETs ... They are used in a wide range of applications like power electronics, motor control, and digital circuits....

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Which type of capacitor is used in AC?

Which type of capacitor is used in AC?

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Which type of voltmeter is used?

Which type of voltmeter is used?

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Which type of MCB is used?

Which type of MCB is used?

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Which type of MCB is used in home?

Which type of MCB is used in home?

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Which type of commutation is used in cycloconverter?

Which type of commutation is used in cycloconverter?

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Which transformer is used in a half-wave rectifier?

Which transformer is used in a half-wave rectifier?

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Which transformer is used in a home?

Which transformer is used in a home?

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Which transformer is used in half wave rectifier?

Which transformer is used in half wave rectifier?
Answer : In a half-wave rectifier, a **step-down transformer** is typically used. The main function of the transformer in a half-wave rectifier is to reduce the AC voltage to a lower level ... transformer** is commonly used in half-wave rectifiers to provide the correct voltage to the rectifying diode....

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in Electrical Engineering

Which transformer is mostly used?

Which transformer is mostly used?

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Which principle is used in transformer?

Which principle is used in transformer?

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Which gas is used in transformer?

Which gas is used in transformer?

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A 500kVA distribution transformer having copper and iron losses of 5kW and 3kW respectively on full load. The transformer is loaded as shown below: Loading (kW) Power Factor (Lag) No. of hours 400 0.8 06 300 0.75 12 100 0.8 03 No load - 03 Calculate the all-day efficiency.

A 500kVA distribution transformer having copper and iron losses of 5kW and 3kW respectively on full load. The transformer is loaded as shown below: Loading (kW) Power Factor (Lag) No. of hours 400 0.8 06 300 0.75 12 100 0.8 03 No load - 03 Calculate the all-day efficiency.
Answer : To calculate the all-day efficiency of the transformer, we need to consider the total energy output, the total energy input, and the losses over a 24-hour period. The transformer experiences two types of ... \] ### Final Answer: The all-day efficiency of the transformer is approximately **98.39%**....

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Give the specification of a three-phase transformer as per IS 1180 (Part 1) 1989 (any four).

Give the specification of a three-phase transformer as per IS 1180 (Part 1) 1989 (any four).

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Give the specification of a three-phase transformer as per IS : 1180 (Part I).

Give the specification of a three-phase transformer as per IS : 1180 (Part I).

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State the criteria for the selection of a power transformer as per IS:10028 (Part–I).

State the criteria for the selection of a power transformer as per IS:10028 (Part–I).

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in Electrical Engineering

Draw the equivalent circuit of a transformer as referred to the secondary.

Draw the equivalent circuit of a transformer as referred to the secondary.

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Draw the equivalent circuit of a transformer as referred to the primary.

Draw the equivalent circuit of a transformer as referred to the primary.

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What is a dry-type transformer?

What is a dry-type transformer?

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Why motor are rated as KW while transformer rated in kVA?

Why motor are rated as KW while transformer rated in kVA?
Answer : Motors are rated in **kW (kilowatts)**, while transformers are rated in **kVA (kilovolt-amperes)** because of the different ways they handle electrical power and the factors affecting their ... whereas a transformer's capacity is related to its ability to transfer both real and reactive power....

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in Electrical Engineering

Three phase induction motor is known as generalized transformer. Justify.

Three phase induction motor is known as generalized transformer. Justify.

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Compare core type and shell type transformer on any four parameters.

Compare core type and shell type transformer on any four parameters.
Answer : Core type and shell type transformers differ in their construction and design. Here's a comparison based on four key parameters: ### 1. **Core Construction:** - **Core Type Transformer** ... advantages, and the choice depends on factors like size, strength, and cost for a given application....

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What is transformer its type?

What is transformer its type?

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Is oil a dielectric?

Is oil a dielectric?
Answer : Yes, oil can be considered a dielectric material. Specifically, mineral oils and other oils used in electrical equipment have insulating properties and are often used as dielectric fluids in ... meaning it can withstand high voltage before breaking down and allowing current to pass through....

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Is oil a primary or secondary energy?

Is oil a primary or secondary energy?

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Give one application of (i) Mineral oil (ii) Varnish (iii) Synthetic oil (iv) Vegetable oil.

Give one application of (i) Mineral oil (ii) Varnish (iii) Synthetic oil (iv) Vegetable oil.
Answer : Here's an application for each: 1. **Mineral Oil** **Application:** **Insulating Oil in Transformers** Mineral oil is widely used as an insulating and cooling medium ... diesel. It can be processed into biodiesel by a chemical process called transesterification and used in diesel engines....

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in Electrical Engineering

How does an oil circuit breaker extinguish an arc?

How does an oil circuit breaker extinguish an arc?
Answer : An oil circuit breaker extinguishes an arc by using oil (usually mineral oil) as a medium to both cool and quench the arc that forms when the contacts of the circuit breaker open under ... or SF6 (sulfur hexafluoride) for arc quenching, which are more efficient and environmentally friendly than oil....

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in Electrical Engineering

Is oil and gas primary or secondary?

Is oil and gas primary or secondary?

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Which form of energy does a battery-powered flashlight receive as an input?

Which form of energy does a battery-powered flashlight receive as an input?
Answer : A battery-powered flashlight receives **chemical energy** as input. Here's how it works: - The battery inside the flashlight stores chemical energy. - When you turn on the flashlight, a chemical ... , the input energy is chemical energy from the battery, and the output is light and heat energy....

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Which type of energy is a secondary energy source?

Which type of energy is a secondary energy source?

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Which type of current always flows in one direction through a wire?

Which type of current always flows in one direction through a wire?

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Which is a type of DAC?

Which is a type of DAC?

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Why does the emf of a battery decrease as it is used?

Why does the emf of a battery decrease as it is used?
Answer : The electromotive force (emf) of a battery decreases as it is used because of internal resistance and chemical changes happening inside the battery. Here's a simple breakdown of why this happens: 1. ... is nearly drained, it can no longer produce the same voltage as when it was fully charged....

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in Electrical Engineering

Can IC 74155 be used as a demultiplexer?

Can IC 74155 be used as a demultiplexer?

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Why PIN diode is used as a switch?

Why PIN diode is used as a switch?
Answer : A PIN diode is used as a switch because of its ability to act as both a high-speed switch and a variable resistor, depending on the biasing conditions. Here's why it works well ... low resistance states, making it effective in high-frequency circuits where fast and reliable switching is required....

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What is a zener diode used as?

What is a zener diode used as?

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Why MOSFET is used as a switch?

Why MOSFET is used as a switch?

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Is a bimetallic strip used as a to control temperature in electrical appliances?

Is a bimetallic strip used as a to control temperature in electrical appliances?
Answer : Yes, a bimetallic strip is often used to control temperature in electrical appliances. It works based on the principle that different metals expand at different rates when heated. Here's how it works ... back on. This is a simple and reliable way to control temperature in many electrical devices....

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