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Why Motor rated in kW/Horsepower instead of kVA?
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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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Define the following ratings of a motor: (i) Horsepower rating (ii) Short-time rating

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How many kVA is in 1 kW?
Answer : To convert from kilowatts (kW) to kilovolt-amperes (kVA), you need to know the power factor (PF) of the system. The relationship is: \[ \text{kVA} = \frac{\text{kW}}{\text{Power Factor (PF)}} \] - **1 ... {0.8} = 1.25 \, \text{kVA} \] So, the kVA value depends on the power factor of the system....

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What is the difference between kVA and kW?
Answer : The difference between kVA (kilovolt-amperes) and kW (kilowatts) comes down to the way electrical power is measured and the role of **power factor** in that measurement. 1. **kW (Kilowatts)**: This ... **: Real, usable power. - **kVA**: Total power supplied, including both real and reactive power....

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Is kVA equal to kW?
Answer : No, kVA (kilovolt-amperes) is not equal to kW (kilowatts), but they are related. - **kVA** measures **apparent power**, which is the total power that flows in the system, including both the usable ... **kW** represents the usable, real power, and they are only equal when the power factor is 1....

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How many kW is 5 kVA?
Answer : To convert kVA (kilovolt-amperes) to kW (kilowatts), you need to know the **power factor (pf)** of the system. The formula is: \[ \text{kW} = \text{kVA} \times \text{Power Factor (pf)} \] - ... 0.8, it's 4 kW. Let me know if you'd like further clarification on power factor or any other details!...

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How many kW is 10 kVA?
Answer : To convert from kVA (kilovolt-amperes) to kW (kilowatts), you need to know the power factor (pf) of the system. The formula is: \[ \text{kW} = \text{kVA} \times \text{Power Factor (pf ... knowing the power factor, we can't give a precise answer, but the general conversion will depend on that value....

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How to convert kW to kVA?
Answer : To convert kW (kilowatts) to kVA (kilovolt-amperes), you need to know the power factor (PF) of the system. The formula to convert kW to kVA is: \[ \text{kVA} = \frac{\text{kW}}{\text{Power ... 0.8 is equivalent to 12.5 kVA. Let me know if you'd like further clarification or have more questions!...

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How many kW is 100 kVA?
Answer : To convert kVA (kilovolt-amperes) to kW (kilowatts), you need to know the power factor (PF) of the system, which is usually between 0 and 1. The formula is: \[ \text{kW} = \text{kVA} \times \text{PF ... = \text{80 kW} \] Let me know if you want more details or have a specific power factor in mind!...

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Is 1 kVA equal to 1 kW?
Answer : No, 1 kVA (kilovolt-ampere) is not always equal to 1 kW (kilowatt). Here's the difference: - **kVA (kilovolt-ampere)** is a unit of **apparent power**. It represents the total power in ... kVA = 1 kW** only when the power factor is 1, which typically happens in ideal or purely resistive systems....

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Why Power Plant Capacity Rated in MW and not in MVA?

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Why we can’t store AC in Batteries instead of DC.or Can we store AC in batteries instead of DC?

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Why is AC used instead of DC?
Answer : AC (Alternating Current) is used instead of DC (Direct Current) in most electrical systems for a few key reasons: ### 1. **Easier to Transmit Over Long Distances:** - AC ... preferred choice for the electrical grid due to its efficiency, cost-effectiveness, and ease of voltage transformation....

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Why use DC instead of AC?
Answer : DC (Direct Current) is used instead of AC (Alternating Current) in certain applications for several reasons: 1. **Simplicity and Stability**: DC is steady and flows in one direction, ... when stability, control, and simplicity are important, while AC is better for large-scale power distribution....

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Why is a potentiometer used instead of a voltmeter?

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Why is resistivity used instead of resistance?
Answer : Great question! The reason **resistivity** is used instead of **resistance** is because resistivity is a material property, while resistance depends on both the material and the physical dimensions ( ... * itself, while resistance tells us about the actual behavior of a specific object or conductor....

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Why we use Kirchhoff's law instead of Ohms law?
Answer : Great question! Kirchhoff's laws and Ohm's law serve different purposes, and they are often used together in circuit analysis, but they are not interchangeable. ### Ohm's Law Ohm's Law (V ... when circuits are more complex. They work together to help you fully understand how a circuit behaves....

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Why do we use conventional current instead of electron flow?

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Why use RCCB instead of MCB?
Answer : An **RCCB (Residual Current Circuit Breaker)** and an **MCB (Miniature Circuit Breaker)** serve different purposes in an electrical system, and that's why both are used for specific protection ... earth leakage) is needed, while an **MCB** is used to prevent damage from overcurrent conditions....

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What is the significance of the rated current in an MCB?

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The power input to a 500V 50Hz 6Pole 3 phase induction motor running at 975 rpm is 40 kW. The stator losses are 1kW and friction and windage losses are 2kW. Calculate: (i) Slip (ii) Rotor copper loss (iii) Shaft power (iv) Efficiency

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Why UPS rating in kVA?
Answer : The rating of a UPS (Uninterruptible Power Supply) is given in kVA (kilovolt-amperes) instead of kW (kilowatts) because it accounts for both the real power (kW) and the reactive power ( ... (real and reactive), ensuring it can support the full electrical load under varying power factor conditions....

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Why is apparent power in kVA?
Answer : Apparent power is measured in **kVA** (kilovolt-amperes) because it represents the total power in an electrical circuit, which includes both **real power** (in kW) and **reactive ... , including both useful and non-useful power, while avoiding the complexities introduced by the phase difference....

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Why transformer rating in kVA?
Answer : Transformers are rated in **kVA** (kilo-volt-amperes) because the rating reflects the **apparent power** (which combines both real power and reactive power) that the transformer can handle, rather than ... 's capability that works for all types of loads, whether their power factor is high or low....

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Can we store AC in batteries instead of DC?
Answer : No, we cannot directly store alternating current (AC) in batteries. Batteries are designed to store and release energy in the form of direct current (DC). Here's why: 1. **Nature of AC and DC**: - ... . When you need to use it, you can convert it back to AC using an **inverter** if necessary....

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What would happen if we use DC source instead of AC source in mutual induction?
Answer : If you use a DC (Direct Current) source instead of an AC (Alternating Current) source in mutual induction, the main difference comes from the behavior of the magnetic field and ... continuously changing current ensures that a varying magnetic field constantly induces current in the secondary coil....

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A single phase wattmeter rated for 500 V; 5 A is having full scale deflection of 1000 watt. What is multiplying factor of the wattmeter?

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