Lab7_Prelab_Guidelines_Fall_2023

A 120 V, 60 W lamp is to be operated on 220 V, 50 Hz supply mains. For the lamp to operate in correct voltage, calculate the value of (i) non-inductive resistance and (ii) pure inductance (U.P.T.U. 2005–06)

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If the resistors used for charging and discharging were the same, the charging anddischarging waveform would be ________.a. Symmetricalb. Nonsymmetrical

A 5uF capacitor is connected across an emf of 50    Volts maximum value and frequency of 1000 cycles. What is the equation of the current?

give definition and explanation about Capacitance meter

a) Design the circuit and sketch the waveform and the phasor diagram of voltage and current in i. Purely resistive circuit ii. Purely inductive circuit iii. Purely capacitive circuit

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AC 15. What would the equivalent resistance be of a 159 uF capacitor? 16. What is the RMS voltage of a circuit if the peak voltage is 170 volts? 17. If the RMS voltage is 240 volts AC, what is the peak voltage? 18. What is the formula for finding an inductors equivalent resistance? 19. What is the equivalent resistance of an inductor with 0.17 henrys? 20. What is the symbol of an AC power source? 21. What is the equivalent inductance of a parallel circuit with a 0.01L, 0.02L, and 1.7L inductor? 22. What is the equivalent inductance of a series circuit with a 0.03L, 0.04L, and 1.6L inductor? 23. A transformer with a primary voltage of 480 volts and a turns ratio of 2:1 will have what secondary voltage? 24. A Power Network is comprised of what three components? 25. What is the main difference between a fuse and a circuit breaker?

Power Electronics

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1. 1-5 K 30v a. what is tue T CTime constant) ? b. How long will it take for the capacutor TO rtach s0% op charge? C. What is tne voltage of capa citor apter 1 seconds? d. How many tíme constants will it take for the soltage to reach 23 v? C. Gweng that the capacitor is fully changed, how will it take por it to be 20% ? long 120v + BF what is the. T ? b. what is the voltage capacitor apter 10 sec? a. C. How many time constants will it take for Tue Vo Itage to reach 80 v.? d. Given that the capaator is Fully charged, how time constants will it be to reau many GOV!

A resistor & a capacitor are connected in series across 230V, ac supply. The current taken by the circuit is 4 A for 50 Hz frequency. The current is reduced to 2 A, when the frequency of supply is decreased to 40 Hz. Determine the value of resistor & the capacitor.

Each of three insulators forming a string has self-capacitance of "C" farad. The shunt capacitance of each cap of insulator is 0-25 C to earth and 0-15 C to line. Calculate the voltage distribution across each insulator as a pecentage of line voltage to earth and the string efficiency.

A series circuit consists of a resistor, a coil, and a capacitor connected across a 300 V, 60 Hz AC source. THe current drawn is 20A. The voltage across the resistor is 60 V, that across the coil is 260 V and that across the capacitor is 100V. The resultant voltage across the coil and the capacitor is 254.56 V. Determine (a) the resistance of the resistor, (b) the resistance and inductance of the coil, and (c) the resistance and capacitance of the capacitor.

18/1.A. Draw the phasor diagram, also write the voltage and current relation statements for the following circuits (i) pure resistor (ii) pure inductor  (iii) Resistor and inductor connected in series.

The diagram shows an inductor that is part of a circuit. The direction of the emf induced in the inductor is indicated. Which of the following is possible? elle O a. The current is increasing and leftward O b. The current is constant and leftward. O c. None of these. O d. The current is increasing and rightward. O e. The current is constant and rightward.

Generate some new applications for Liquid Metal Batteries in other contexts and consider its long-term significance

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1. Describe the difference between the currents that exist in the wires leading to a capacitor when theses wires are connected to (a) a DC source and (b) an AC source.

An air filled parallel-plate capacitor is connected to a 12 Volts battery, the battery is disconnected when it is fully charged to 7.3 nC. The separation distance between the plates is d1= 8 cm. Now, If the plates are moved to a new distance d233 cm. the new energy stored in the capacitor is O a. 13.14 nJ O b. 8.21 nJ O c. 1.64 nJ O d. 10.96 nJ O e. 5.47 nJ O f. 16.42 nJ

TOE This is a photo of a capacitor that corrects the power factor in an AC setup, in DC it is used in electronic board for appliances and other small devices. Tell me something about this photo.

1- For the values = 0.7 and W, = 2 find the rise time, peak time, settling time, and the maximum peak values. the

DESCRIPTION OF SIMILARITIES AND DIFFERENCES OF DC AND AC CIRCUITS WITH RESISTIVE AND CAPACITIVE PASSIVE ELEMENTS