A 10-20 vdc power source is a low output power supply used for small devices like battery chargers, notebook computers, and appliances. They use AC power input to convert it into DC power.
1. If you do work on an object in one-third the usual time, your power output is A) one third the usual power output. B) the usual power output. C) three times the usual power output. D) impossible to predict without additional information. Answer: C
it would be 9 times yesterday's power output
for example 2 to the power of two thirds, you have to find the percent of two thirds , then use the percent [to the power] then mutipy to the power [like with exponets] then you should get your answer.
The power could then be called an exponent. The number that is being raised to a power is called the base. In the case of 42, the exponent is 2 and the base is 4.
B. Efficiency
B.) efficiency
Output equals efficiency times input; in formula, Ot = Ef x In and so In = Ot/Ef. To calculate the original input, divide the output by the efficiency.
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.
Output power divided by input power, for a machine, is called the machine's efficiency. It need not be mechanical energy.
This is called the efficiency of the power plant. Efficiency is a measure of how well a power plant can convert its fuel input into useful electricity output.
Output Power divided by Power Factor.
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.
Output - because it is outputting power to the rest of the device
power in, and power out--input and output.
input 220v ac & output 24v dc
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).