A control voltage or current is the
Homework Answers
Current control voltage source is mainly use to input/ output characteristic of circuit elements.
So it behave as a load as well as bias element
Answer-. (b) bias
(d) load
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A control voltage or current is the
A control voltage or current is the Multiple Choice...
1) What component in a power supply converts ac line voltage to dc voltage? a. Transformer...
1) What component in a power supply converts ac line voltage to dc voltage? a. Transformer b. rectifier diode c. resistor d. capacitor 2) A circuit that provides an entirely positive or negative output voltage when an ac input voltage is applied is called a a. rectifier b. inverter c. filter capacitor d. zener diode 3) A control voltage or current is the a. power factor b. bias c. ground d. load 4) When the voltage at the op amp's...
3. (30% ) The voltage and current at the terminals of a load circuit are given...
3. (30% ) The voltage and current at the terminals of a load circuit are given by: )=1202 sin(ar) V i ()=812 sin(ar-60)+6/2 sin(Bax -120) A (V) and (A). (a) Find (b) Find the real (average) power P delivered to the load. (c) The distortion factor of the current waveform. (e) Find the displacement power factor DPF for this circuit. (f) Find the power factor of the load. (g) Is the load linear? 3. (30% ) The voltage and current...
I. The ac voltage controller in Figure 1 uses on-off control for heating a resistive load...
I. The ac voltage controller in Figure 1 uses on-off control for heating a resistive load of R-4Ω and the input voltage is Vs-208V(rms),60Hz. If the desired output power is Po=3kW, determine (a) the duty cycle D, and (b) the input power factor Triac vin ) Figure 1
A three-phase load has a voltage of 1.0 pu with current 0.1 pu. The current lags...
A three-phase load has a voltage of 1.0 pu with current 0.1 pu. The current lags the voltage by 30 degrees. A lossless capacitor is to be installed in parallel with the load to improve the overall power factor to 0.95 lagging. Find the amount of reactive power that needs to be injected by the capacitor. Select one: a. 0.0646 pu b. 0.0215 pu C. 0.0785 pu d. -0.0215 pu
3. If the voltage and current (both are rms values) supplied to a circuit or load...
3. If the voltage and current (both are rms values) supplied to a circuit or load by a source are Varm) = 460?0° V, Is(m)-1414L-45° A. Determine the a) the power supplied by the source which is dissipated as heat or energy in the circuit, b) the power stored in the reactive components and c) the power factor angle and power factor 4. An ideal transformer is rated to deliver 460 KVA at 380 V to a customer T Customer's...
Using rms values to represent their magnitudes, the voltage across and the current into a load...
Using rms values to represent their magnitudes, the voltage across and the current into a load are as follows in phasor form: v - Ve/o° and I -le-i Show that the instantaneous power p() v)i(t) can be written as pt) PP cos 2Q sin 2ut, where average power cos φ and reactive power Q-VI sin φ if I'= 120 V, 1-| A, and Φ = 30°, find the actual value of P. Q. S and power factor (PF). Is this...
Problem 2: The waveforms of voltage and current at a single phase load are recorded and...
Problem 2: The waveforms of voltage and current at a single phase load are recorded and presented in the analytical form: v(t) = 100 + 320 * sin(21 * 50t) V i(t) = 20 * sin(2x + 50t - 4) + 20 * sin(21 * 100t - ) A Determine: a) The power absorbed by the load, and b) The power factor
20. The voltage and current in an electrical load is given by v(t) = 100 cos(wt...
20. The voltage and current in an electrical load is given by v(t) = 100 cos(wt + 15°) and i(t) = 2 cos(wt – 15°). The reactive power Q in the load is 21. An electrical load absorbs an average power of 8kW at a leading power factor of 0.8. The reactive power in the load is 22. A balanced Y-connected load with an impedance of 104–30°N? per phase is supplied by a balanced A-connected source with Va = 208/30°V...
To design a high efficiency d.c., to d.c power converter with the given specifications min 10V max 15V nominal (regulated) 8V Input voltage: Output voltage: Nominal load current: 4A Inductor current...
To design a high efficiency d.c., to d.c power converter with the given specifications min 10V max 15V nominal (regulated) 8V Input voltage: Output voltage: Nominal load current: 4A Inductor current ripple: 0.1A max Switching frequency: 30 kHz Output voltage ripple: 20 mV Define a suitable power circuit topology to meet the above specification? Sketch a circuit diagram of the chosen power circuit topology (a) Define the minimum and maximum duty cycles assuming that the control circuit keeps the output...
A load draws a current from a voltage source. the equation of the current and voltage...
A load draws a current from a voltage source. the equation of the current and voltage are I = 10coswt and V = 220sinwt. What is power? choices: a. 2200w b. 0 c. 1556w d. 1320w
3. (30% ) The voltage and current at the terminals of a load circuit are given by: )=1202 sin(ar) V i ()=812 sin(ar-60)+6/2 sin(Bax -120) A (V) and (A). (a) Find (b) Find the real (average) power P delivered to the load. (c) The distortion factor of the current waveform. (e) Find the displacement power factor DPF for this circuit. (f) Find the power factor of the load. (g) Is the load linear? 3. (30% ) The voltage and current...
I. The ac voltage controller in Figure 1 uses on-off control for heating a resistive load of R-4Ω and the input voltage is Vs-208V(rms),60Hz. If the desired output power is Po=3kW, determine (a) the duty cycle D, and (b) the input power factor Triac vin ) Figure 1
A three-phase load has a voltage of 1.0 pu with current 0.1 pu. The current lags the voltage by 30 degrees. A lossless capacitor is to be installed in parallel with the load to improve the overall power factor to 0.95 lagging. Find the amount of reactive power that needs to be injected by the capacitor. Select one: a. 0.0646 pu b. 0.0215 pu C. 0.0785 pu d. -0.0215 pu
3. If the voltage and current (both are rms values) supplied to a circuit or load by a source are Varm) = 460?0° V, Is(m)-1414L-45° A. Determine the a) the power supplied by the source which is dissipated as heat or energy in the circuit, b) the power stored in the reactive components and c) the power factor angle and power factor 4. An ideal transformer is rated to deliver 460 KVA at 380 V to a customer T Customer's...
Using rms values to represent their magnitudes, the voltage across and the current into a load are as follows in phasor form: v - Ve/o° and I -le-i Show that the instantaneous power p() v)i(t) can be written as pt) PP cos 2Q sin 2ut, where average power cos φ and reactive power Q-VI sin φ if I'= 120 V, 1-| A, and Φ = 30°, find the actual value of P. Q. S and power factor (PF). Is this...
Problem 2: The waveforms of voltage and current at a single phase load are recorded and presented in the analytical form: v(t) = 100 + 320 * sin(21 * 50t) V i(t) = 20 * sin(2x + 50t - 4) + 20 * sin(21 * 100t - ) A Determine: a) The power absorbed by the load, and b) The power factor
20. The voltage and current in an electrical load is given by v(t) = 100 cos(wt + 15°) and i(t) = 2 cos(wt – 15°). The reactive power Q in the load is 21. An electrical load absorbs an average power of 8kW at a leading power factor of 0.8. The reactive power in the load is 22. A balanced Y-connected load with an impedance of 104–30°N? per phase is supplied by a balanced A-connected source with Va = 208/30°V...
To design a high efficiency d.c., to d.c power converter with the given specifications min 10V max 15V nominal (regulated) 8V Input voltage: Output voltage: Nominal load current: 4A Inductor current ripple: 0.1A max Switching frequency: 30 kHz Output voltage ripple: 20 mV Define a suitable power circuit topology to meet the above specification? Sketch a circuit diagram of the chosen power circuit topology (a) Define the minimum and maximum duty cycles assuming that the control circuit keeps the output...
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