a) define complex power in terms of the supply current i and v b) draw separately the current and power phasor relations for the case of a load consisting of a series connection of a resistor and an inductor across the voltage supply c) A single phase load connected to a 230V, 50Hz source draws is rated 1.84kVA at a phase angle of 40,lagging, determine the current drawn from the supply and load power factor, calculate the active and reactive...
IN OUT LM317 R1 Ci ADJ 240V 121 0.1u LOAD Vac 50Hz R2 Bridge Rectifier Let Ci = 2200uF, R LOAD = 100, R1-120, R2-820 Calculate the output voltage of the power supply (acrosS RLOAD), in Volts. [Do not enter units in your answer.] Answer: By considering this circuitincluding a zener diode, and by determining the minimum and maximum currents associated with the zener, calculate a maximum value for R. Assuming the units are in ohms, provide only the numerical...
Problem 7 Three three-phase wye-connected loads are in parallel across a three-phase supply. The first load draws a current of 10 A at pf- 0.93 (leading), and the second and third loads (each) draw a current of 20 A at pf= 0.85 (lagging). Suppose the line-to-line voltage is 240 V. Compute the following: a) The transmission line current b) The load power factor c) The complex power supplied by the source Problem 7 Three three-phase wye-connected loads are in parallel...
& w R R2 Each resistor has a resistance of 2.5 Ohms. The power supply voltage is 12 V. If the wire connected to the negative terminal of the power supply has a voltage of ov, then what is the voltage of the wire which is connecting the two resistors (the middle wire)? O 6V 4.8V O 30 V O correct answer not shown O 12V
A circuit consists of a power supply and two resistors R1 and R2 connected in parallel. An ammeter is placed to measure the current through resistor R1. The ammeter reads I1 = 8.9 mA, and the values of the resistors are R1 = 7.7 kOhm and R2 = 820 Ohm. What is the value of voltage across R2?
5.29 A power supply is an instrument or circuit that produces a steady voltage similar to a battery. A good power supply produces an almost constant voltage and has almost zero Thevenin resistance. In the power supply of Fig. 5-28a there is an adjustment for changing the output voltage from 10 to 30 V. This being the case, what is the minimum load power with a 100-0 load? The maximum load power? 5.30 What current rate should the fuse of...
A circuit consists of a power supply and two resistors R1 and R2 connected in parallel. The resistance of R1 is higher than the resistance of R2 (R1 > R2) Which of the following is correct? Select one: a. The current through R1 is the same as the current through R2 (I1 = I2 ?) The voltage across R1 is the same as the voltage across R2 (V1 = V2 ?) b. The current through R1 is the same as...
A circuit consists of two resistors connected in series with a power supply, as shown in the figure. The resistance of ?1 is less than the resistance of ?2. A series circuit with two resistors R subscript 1 and R subscript 2. R subscript 1 is connected to the positive terminal of the power supply, and is the first resistor in the circuit. Which resistor has the greater current flowing through it? ?2 ?1 The current through each resistor is...
r connected 3 phase load of 12 l per phase is ov 60 Hz mains supply at unity power factor se voltage, (b) line current and (c) total power 04. A balanced star connecter supplied from a 450V. 60 Calculate the (a) phase voltage. (b) consumed? 1. Phase Voltage 2. Line current 3. Total Power Consumed
Rc circuit R2 7) R3 Four resistors of values R1 = 2.0 Ω, R2 = 4.0 Ω, R3-3.00, and R4° 9.0 Ω are connected across an 8.0 VDC source as shown in the above figure, what is the power dissipated in R2, the 4.00 resistor? A) 4.0 W B) 16. W C)9.0 W D) 7.1 W E) 1.0 W 8) Also calculate the voltage across R a) 1 V b) 2 V c) 3 V d) 4 V