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How is energy efficiency determined?
You divide useful output energy by the input energy. Or equivalently, useful output power by input power.
How do you find power input with given power factor and power output?
Output Power divided by Power Factor.
Is ups input or output device?
UPS is Uninterruptable Power Supply. It is neither input not output. It supplies electrical power to a computer when the main electrical supply is interrupted. It does not handle data in any way.
Is power supply input or output devices?
Output - because it is outputting power to the rest of the device
What does the power relatio0nship state on a transformer?
power in, and power out--input and output.
What is the required input and output voltages for a personal computer to power on?
input 220v ac & output 24v dc
When a PNP transistor is connected in a circuit in the manner it can be used as a power amplifier because?
the output voltage will be much larger than the input voltage
Why is output dc higher than input ac?
Output power can never be more than input power. With a transformer, it is possible to increase the output current (while decreasing the output voltage), or to decrease the output current (while increasing the output voltage).
What is efficiency and how is it calculated?
The efficiency is output divided by input.
Another way of saying that the output is 70 percent of the signal input at cutoff frequency is that the output is up or down dB at frequency cutoff?
If the output power is 70% of the input power, then the output is roughly 1.55 dB downcompared to the input.If the voltage at any point of the output waveform is 70% of the voltage at the same pointon the input waveform, and the input and output impedance are equal, then the output is3.1 dB down (rounded) compared to the input.
Efficiency is a comparison of?
Efficiency is output power divide by input power.
What is amplifier and types of amplifiers?
Amplifiers are electronic device that responds to a small input signal (voltage, current, or power) and delivers a larger output signal.
