The function of direct current regulated power supply is to input an alternating current power of 220volts, so that it can output __________.( )
A: alternating current 200 volts voltage
B: direct current 24 volts voltage
C: direct current 200 volts voltage
D: alternating current 24 volts voltage
A: alternating current 200 volts voltage
B: direct current 24 volts voltage
C: direct current 200 volts voltage
D: alternating current 24 volts voltage
举一反三
- When a BJT is in cutoff, the collector-to-emitter voltage is typically equal to _____ A: collector supply voltage B: collector current times collector resistor C: 0.3 Volts D: emitter voltage
- The effective value of ac voltage or current is（ ） A: The average value of a voltage or current B: DC equal to the AC thermal effect is defined as the effective value of AC C: voltage or current are 0.707 of their amplitudes D: closely related to the frequency of alternating current
- The<br/>common-base amplifier has _()()()__. A: voltage gain, current gain, and power gain B: voltage gain and power gain, but no current gain C: current gain and power gain, but no voltage gain D: current gain and voltage gain, but no power gain
- The voltage meter and current meter on the main switchboard shows ( <br/>). A: phase voltage and phase current of generator B: line voltage and line current of generator C: line voltage and line current of crane D: line voltage and line current of shore power
- A nonlinear device Z has the i-v relationship shown below.This device is used in the circuit shown below, where "I" is the value of the current source.Assuming that \(I=$I1 A\), what is the value of the voltage \(v_o\) (in Volts)?Now assuming that \(I = $I2 A\), what is the value of the voltage \(v_o\) (in Volts)?Finally, for the last two parts assume that \(I = $I34 A\).What is the value of the voltage \(v_o\) (in Volts)?<br/>______