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Electrical Engineering

Can resistance be 0 ohms?

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Can resistance be 0 ohms?

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Can ohms be less than 1?

Can ohms be less than 1?
Answer : Yes, ohms can be less than 1. In fact, the unit "ohm" is just a measurement of electrical resistance, and it can have any value, including values less than 1. For example: - **Resistors* ... , **resistance can definitely be less than 1 ohm**, and it's often seen in practical electrical components!...

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Can Ohm's law be violated?

Can Ohm's law be violated?

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Can resistance be equal to resistivity?

Can resistance be equal to resistivity?
Answer : No, **resistance** and **resistivity** are related but not the same thing. Here's the difference: - **Resistance (R)** is a property of a material or component that describes ... conditions. Typically, resistance is calculated with the formula above, and resistivity is a constant for the material....

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Can ammeter resistance be zero?

Can ammeter resistance be zero?
Answer : In theory, an ammeter should have zero resistance because we want it to measure current without affecting the circuit. However, in practice, no ammeter has absolutely zero resistance. Here's why: 1. ** ... resistance should be as close to zero as possible, in real life, it can't be truly zero....

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What does 0 ohms mean?

What does 0 ohms mean?

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A workshop measures 10m × 25m. The shop is illuminated by 24 lamps of 200 watts each. The lumen efficiency of each lamp is 15 lumens per watt. Depreciation factor is assumed to be 0.8 and a coefficient of utilization 0.5. Determine the illumination on the working plane.

A workshop measures 10m × 25m. The shop is illuminated by 24 lamps of 200 watts each. The lumen efficiency of each lamp is 15 lumens per watt. Depreciation factor is assumed to be 0.8 and a coefficient of utilization 0.5. Determine the illumination on the working plane.

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Is 0 resistance possible?

Is 0 resistance possible?

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Which meter has a greater sensitivity and why? Meter A having a range of 0-10 V and a multiplier resistance of 18 kΩ and meter B with a range of 0-300 V and multiplier resistance of 298 kΩ? Both meter movements have a resistance of 2 kΩ.

Which meter has a greater sensitivity and why? Meter A having a range of 0-10 V and a multiplier resistance of 18 kΩ and meter B with a range of 0-300 V and multiplier resistance of 298 kΩ? Both meter movements have a resistance of 2 kΩ.

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A 3 phase line of 4 km length delivers 4000 kW at a p.f of 0.8 lagging to a load the resistance and reactance per km of each conductor are 0.2 Ω and 0.5 Ω respectively if the voltage at the supply end is maintained at 11 kV. Calculate the received end voltage and efficiency of line.

A 3 phase line of 4 km length delivers 4000 kW at a p.f of 0.8 lagging to a load the resistance and reactance per km of each conductor are 0.2 Ω and 0.5 Ω respectively if the voltage at the supply end is maintained at 11 kV. Calculate the received end voltage and efficiency of line.
Answer : Let's break down the problem step by step and calculate the received end voltage and the efficiency of the line. ### Given Data: - Power delivered to the load, \( P = 4000 \, \text{kW} \) - Power factor, \( \text{p. ... voltage**: \( 10.43 \, \text{kV} \) - **Efficiency of the line**: \( 98.61\% \)...

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A 3 φ I.M. has synchronous speed of 250rpm and 4% slip at full load. The rotor has a resistance of 0.02Ω/ph and stand still reactance of 0.15Ω/ph. Calculate i) The speed at which max torque is developed. ii) The ratio of maximum to F. L. torque. iii) The ratio of maximum to starting torque.

A 3 φ I.M. has synchronous speed of 250rpm and 4% slip at full load. The rotor has a resistance of 0.02Ω/ph and stand still reactance of 0.15Ω/ph. Calculate i) The speed at which max torque is developed. ii) The ratio of maximum to F. L. torque. iii) The ratio of maximum to starting torque.

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Can a photon have 0 spin?

Can a photon have 0 spin?
Answer : No, a photon cannot have zero spin. A photon is a particle of light, and it always has a spin of 1. However, its spin can only take certain values depending on the direction it's moving. Photons are **massless** ... motion. So, in summary, a photon always has spin 1, but it can't have a spin of 0....

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How can voltmeter read 0?

How can voltmeter read 0?

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What is the Ohm's law Cannot be applied to?

What is the Ohm's law Cannot be applied to?

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What will be the resistance if length is halved?

What will be the resistance if length is halved?

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What will be the new resistance of A wire of resistance r is stretched to four times its initial length?

What will be the new resistance of A wire of resistance r is stretched to four times its initial length?

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What will the wire's resistance be if you stretch it to twice its initial length?

What will the wire's resistance be if you stretch it to twice its initial length?

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What will be the new resistance when a wire of resistance R is stretched to four times its initial length?

What will be the new resistance when a wire of resistance R is stretched to four times its initial length?

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What will be the new resistance of a wire of resistance r is stretched to four times its initial length?

What will be the new resistance of a wire of resistance r is stretched to four times its initial length?
Answer : When a wire is stretched, its resistance changes because the length and the cross-sectional area of the wire change. The resistance of a wire is given by the formula: \[ R = \rho \frac{L}{A} \] Where: - \ ... initial resistance of the wire is \( r \), the new resistance will be: \[ R' = 16r \]...

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When a wire is stretched and its radius becomes R by 2 then its resistance will be?

When a wire is stretched and its radius becomes R by 2 then its resistance will be?

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What is the internal resistance of a Current Source and what should it be replaced with: Short circuit or Open Circuit?

What is the internal resistance of a Current Source and what should it be replaced with: Short circuit or Open Circuit?
Answer : The **internal resistance of a current source** refers to the resistance that the current source has internally. In ideal conditions, the internal resistance of a **perfect current source** is ... most practical purposes. You would replace it with an open circuit when considering its ideal behavior....

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What is the internal resistance of a Voltmeter and what should it be replaced with: Short circuit or Open Circuit?

What is the internal resistance of a Voltmeter and what should it be replaced with: Short circuit or Open Circuit?

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What is the internal resistance of a Voltage source and what should it be replaced with: Short circuit or Open Circuit?

What is the internal resistance of a Voltage source and what should it be replaced with: Short circuit or Open Circuit?

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What is the internal resistance of an Ammeter and what should it be replaced with: Short circuit or Open Circuit?

What is the internal resistance of an Ammeter and what should it be replaced with: Short circuit or Open Circuit?

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Calculate speed of motor when delivery maximum voltage. Also calculate the resistance to be added to achieve 3/4th of maximum torque at time of starting.

Calculate speed of motor when delivery maximum voltage. Also calculate the resistance to be added to achieve 3/4th of maximum torque at time of starting.
Answer : To calculate the speed of the motor when delivering the maximum voltage and the resistance to be added to achieve 3/4th of maximum torque at the time of starting, we need to break down the ... resistance. If you have specific values for these parameters, I can help you calculate the exact numbers....

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How many ohms can a resistor have?

How many ohms can a resistor have?
Answer : A resistor can have a wide range of values depending on its purpose and design. The resistance value, measured in ohms (Ω), can vary from as low as **fractions of an ohm** (like 0.1Ω) to ** ... **E12 or E24 series**, which are ranges of values that make it easy to choose resistors for everyday use....

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When can you not use Ohm's law?

When can you not use Ohm's law?

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Can microcontroller be programmed?

Can microcontroller be programmed?
Answer : Yes, microcontrollers can be programmed. In fact, programming is how you tell a microcontroller what to do. Microcontrollers are small, self-contained computers that control electronic devices and ... , sensors, and other electronic components based on the instructions you provided in your program....

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Can IC 74155 be used as a demultiplexer?

Can IC 74155 be used as a demultiplexer?

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Can the Hall coefficient be zero?

Can the Hall coefficient be zero?

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Can sound be a matter wave?

Can sound be a matter wave?

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Can light be a matter wave?

Can light be a matter wave?
Answer : Yes, light can be described as a **matter wave** in the context of quantum mechanics. While light is typically thought of as electromagnetic radiation (which behaves as a wave and also as ... duality is fundamental in understanding the behavior of light and all other particles at the quantum level....

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Can females be color blind?

Can females be color blind?

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How can a glass plate be converted into a mirror?

How can a glass plate be converted into a mirror?

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How can LEDs be used in event lighting?

How can LEDs be used in event lighting?

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How can LEDs be used in fashion shows?

How can LEDs be used in fashion shows?
Answer : LEDs can be used in fashion shows in many creative and innovative ways to enhance the visual appeal and experience. Here are some of the ways LEDs are incorporated into fashion ... designers and technologists. They blend fashion with technology, providing endless possibilities to wow the audience....

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How can LEDs be used in stage lighting?

How can LEDs be used in stage lighting?

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How can LEDs be used in home theater lighting?

How can LEDs be used in home theater lighting?

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How can LEDs be used in fashion design?

How can LEDs be used in fashion design?
Answer : LEDs can be used in fashion design in creative and innovative ways to enhance the visual appeal of clothing and accessories. Here's how they can be incorporated: ### 1. **LED- ... interactive element to clothing and accessories, making them stand out and pushing the boundaries of creativity....

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How can LEDs be used in flash photography?

How can LEDs be used in flash photography?

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How can LEDs be used in fashion?

How can LEDs be used in fashion?

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How can LEDs be used in emergency lighting?

How can LEDs be used in emergency lighting?
Answer : LEDs (Light Emitting Diodes) are often used in emergency lighting systems for several reasons. Here's how they work and why they're effective: ### 1. **Energy Efficiency:** ... heat output, and overall durability. They ensure safety and reliability during emergencies when every second counts!...

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How can LEDs be integrated into home automation systems?

How can LEDs be integrated into home automation systems?

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How can LEDs be used in signage?

How can LEDs be used in signage?

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How can LEDs be used in horticultural lighting?

How can LEDs be used in horticultural lighting?
Answer : LEDs (Light Emitting Diodes) are widely used in horticultural lighting due to their ability to provide specific light wavelengths that plants need for photosynthesis and growth. Here's how LEDs ... provide the specific light needed to enhance plant growth while being cost-effective and sustainable....

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How can a UPS be integrated with building management systems?

How can a UPS be integrated with building management systems?
Answer : Integrating a UPS (Uninterruptible Power Supply) with a Building Management System (BMS) helps ensure a seamless operation in the event of a power failure, allowing the BMS to monitor ... monitoring, allows proactive maintenance, and enhances the reliability of essential services in the building....

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How can EMI be minimized in SMPS designs?

How can EMI be minimized in SMPS designs?
Answer : Minimizing Electromagnetic Interference (EMI) in Switch-Mode Power Supply (SMPS) designs is crucial to ensure that the power supply operates efficiently and does not cause interference with other ... reduce EMI in your SMPS design, resulting in better performance and compliance with regulations....

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How can inverter noise be minimized?

How can inverter noise be minimized?

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How can THD be minimized in inverter designs?

How can THD be minimized in inverter designs?
Answer : Total Harmonic Distortion (THD) is a key parameter to consider in inverter designs, as it measures the deviation from a pure sinusoidal waveform. Minimizing THD is crucial to ensure ... minimized, leading to better performance, improved efficiency, and reduced wear on electrical components....

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What is the maximum number of MCBs that can be installed in a panel?

What is the maximum number of MCBs that can be installed in a panel?
Answer : The maximum number of Miniature Circuit Breakers (MCBs) that can be installed in a panel depends on a few factors: 1. **Panel Size**: The physical size of the electrical ... follow the panel manufacturer's specifications and the local electrical codes to ensure safety and proper functionality....

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What lessons can be learned from historical electrical fires involving MCBs?

What lessons can be learned from historical electrical fires involving MCBs?

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