The power that an amplifier delivers to a load is equal to the difference between the power that the circuit draws from the power supply and the power that the circuit dissipates. ? 正确|错误
正确
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举一反三
- Power supply, the conductor, the control device and ______ are four basic parts of an electric circuit
- For the sinusoidal steady-state circuit, , the real power absorbed by 5 W resistor is 10W , the power factor of the circuit is:/ananas/latex/p/149319
- The voltage source in the circuit( ).[img=166x83]1803a2ffaa8699a.jpg[/img] A: provides power B: neither provides power nor absorbs power C: absorbs power D: whether to develop power or absorb power depends on R
- Electric power is an indispensable energy on board, so _____ plays a role in distribution, conversion and control of electric power on board. A: power supply unit B: distribution device C: power network D: load
- When measuring current, circuit power before connecting the meter in the circuit.
内容
- 0
The plus (+) and minus (-) signs in an electric circuit diagram are used to define . A: . voltage polarity B: . current direction C: . power flow D: . absorbed power
- 1
The controller of an electric car takes power from the batteries and delivers it to the motor.( )
- 2
For a balanced three-phase △ -connected load, the average power absorbed by the load is P . Change the △ -connected load to Y-connected load, the power will :
- 3
供电组件能够提供28V直流电。 A: The power unit can supply 28 VD B: The power unit is capable of producing 28 VD C: The power unit may supply 28 VD D: The power unit would supply 28 VD
- 4
Flower the power flows, put the following power supply unit components in the correct order: