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What is a high-lumen LED?
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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.

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Compare the salient features of mercury vapour lamp and sodium vapour lamp based on (i) lamp efficiency (ii) lumen output.

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What is the difference between a high-power LED and a low-power LED?

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What is the difference between a standard LED and a high-power LED?

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What is the importance of a heat sink for high-power LEDs?

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What is a high-frequency transformer?
Answer : A **high-frequency transformer** is a type of transformer that operates at much higher frequencies than traditional transformers. While regular transformers typically work at the standard ... conversion and signal processing, offering a compact and efficient solution for high-speed applications....

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What are the characteristics of a high-efficiency power supply?

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What are the challenges in designing a high-frequency SMPS?

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What is a layout guideline for high-frequency circuits?

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How does a MOSFET's drain-source capacitance impact its high-frequency performance?

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How does a flash ADC achieve high-speed conversion?

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What is the purpose of a bootstrap capacitor in high-side drivers?

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How does a delta-sigma ADC achieve high resolution?

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How does a charge-pump circuit generate high voltages?

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How does a current-feedback amplifier achieve high slew rate?

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What is the function of a bootstrap capacitor in a high-side driver?

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How does a class D amplifier achieve high efficiency?

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How does a sigma-delta ADC achieve high resolution?

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How does a high impedance busbar differential protection scheme provide stability during external faults?

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How does a high impedance differential protection scheme handle CT saturation?

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How does a negative sequence overcurrent protection scheme detect high resistance phase-to-phase faults?

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How does a high impedance restricted earth fault protection scheme provide stability during through faults?

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How does a high resistance earth fault protection scheme work?

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How does a high impedance bus differential protection scheme provide stability during CT saturation?

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How does a sensitive earth fault protection scheme detect high impedance faults?

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How does a high-set instantaneous overcurrent element provide backup protection?

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How does a high impedance differential protection scheme work?

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What is the purpose of a bleeder resistor in a high-voltage power supply?

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What is the difference between a low-pass and high-pass filter?

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How does skin effect impact the resistance of a conductor at high frequencies?

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How does a quantum well infrared photodetector achieve high detectivity?

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How does a spin-transfer nano-oscillator generate high-frequency signals?

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What is the purpose of a T-coil in high-speed circuits?

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How does a resonant converter achieve high efficiency?

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What is the purpose of a phase interpolator in high-speed serial links?

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How does a high-impedance differential protection scheme work?

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Why the reactance of a system under fault condition is low and faults currents may raise dangerously high value. ? (With simple example)

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