Answered: When 2 volts e.m.f. is applied across a…

When 2 volts e.m.f. is applied across a 1 farad capacitor, it will store the energy of a) 2 Joules c) 4 Joules b) 2 Watts d) 1 Watt

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter4: Symbols

Section: Chapter Questions

Problem 5SQ: The symbol shown is a a. polarized capacitor. b. normally closed switch. c. normally open held...

See similar textbooks

Related questions

Q: Determine the total inductance. L1 L2 L3 10H 20H 30H L1 10H L2 20H L3 30H

A: In this question we will find equivalent inductance...

Q: 2. If three equal capacitors are connected in series to an 18 V(rms) AC source, each capacitor drops…

A: given data:

Q: When 4 voits e.m.f. is applied across a 1 farad capacitor, it will store energy of (a) 2 joules (b)…

A: Given, Applied E.M.F. V=4 volts. Capacitance, C=1 F.

Q: In a capacitor which of the following is used to separate the two parallel plates? Dielectric…

A: Capacitor: Capacitor is a device which can store energy in the form of electrical energy. It is two…

Q: Two parallel wires made of copper are placed in air. The inductance of each wire is 0.9 µH/m with…

A: Two parallel wires made of copper are placed in air. Total inductance L= 0.9uH/m What is the…

Q: 7. In a pure inductive circuit, the phase angle between the voltage waveform and current waveform…

A: In an inductor voltage leads the current And in capacitor current leads voltage. The pahsor diagram…

Q: Match each type of transducer with the corresponding physical phenomenon, law, or property where it…

A: We are given with the following choices: Lorentz law Charge Faraday's law Ohm's law Capacitance…

Q: Calculate the voltage across each capacitor in Figure 1. 50μ F 40μ F 10μ F +V1 - + V3 - + 90 V 20μ F…

Q: calculate the magnitude of the voltage drop across the jik ohm inductor 1.2 k2 jl k2 -j4.7 kQ j2.2…

Q: does it take for the capacitor. How long to reach 70 Volts

Q: Question 9 Equivalent capacitance equals Ez E Es None of these

A: Right Answer option None of these

Q: Calculate the inductance for a coil with 120 turns, a current of 0.47 mA, and a flux of 1.2x10Wb. a…

A: Given: No. of turns, N=120 turns Flux, ϕ=1.2×10-6Wb Current, I=0.47mA

Q: Determine the current in an inductor if the energy stored is 180 J and the inductance is 40 Н. О 2А…

Q: Capacitance increases with a. Increase in plate area and decrease in distance between the plates O…

Q: Compute the amount of capacitance needed to correct the power factor to 90%

Q: If three inductors connected in series 0.06 H,0.05H,0.1H.What would be the inductive reactance of…

A: Given:- Inductors are connected in series, L1 = 0.06H , L2 = 0.05H , L3 = 0.1H frequency, f = 60…

Q: f the number of turns is doubled, what will happen to the inductance?

A: Inductance = Flux linkage / current = Number of turns* Flux /current. But flux =…

Q: The potential difference is measured in .volt

A: Potential Difference:

Q: What is the speed of an inductor motor of 7 poles if the slip is 2.1%

Q: What type of inductor is shown below? O variable Toroidal air core iron core

A: In this question we need to choose a correct option.

Q: Calculate the equivalent capacitance that would connect to points "A" and "B". Answer in…

Q: r eut 20 Cm 1Ocm 1oum /111/ 下 A capacitur is mnde by sandwiching a sheet of two sheets of aluminum…

A: A capacitor is made by sandwiching a sheet of wax paper between two sheets of aluminium foil , as…

Q: Determine the current lo if Is = 87 and R = 23. 22 22 ww Is 52

Q: If a circuit has a resistance of 3002 and a series inductance of 5002, what is the relationship…

A: The solution is given below

Q: Show that the voltage division rule for two capacitors in series as in figure 1

Q: A direct current (DC) of 4A flows into a previously uncharged 20 µF capacitor for 3 ms. Determine…

A: Given: Direct current, I=4 A Uncharged capacitor of capacitance, C=20 μF Time, t=3 ms

Q: 33. How much energy is stored by a 100 mH inductance with a current of 1 A? O 0.01 J 0.05 J O 1 J O…

Q: 1. Determine total capacitance looking at the terminals 'a' and 'b' of Figure 1. 94 16 14 18 12 16…

Concept explainers

Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.

Question

When 2 volts e.m.f. is applied across a 1 farad capacitor, it will store the energy of
a) 2 Joules
c) 4 Joules
b) 2 Watts
d) 1 Watt

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

What is the minimum AC voltage rating of each capacitor in Question 11?
A capacitor uses air as a dielectric and has a capacitance of 3 F. A dielectric material is inserted between the plates without changing the spacing, and the capacitance becomes 15 F. What is the dielectric constant of this material?
Incandescent lighting of 500 W is connected in parallel with an inductive load. A clamp-on ammeter reveals a total circuit current of 7 A. What is the inductance of the load connected in parallel with the incandescent lights? Assume a voltage of 120 V and a frequency of 60 Hz.
A 15-F AC capacitor is connected in series with a 50 resistor. The capacitor has a voltage rating of 600 WVDC. The capacitor and resistor are connected to a 480-V, 60-Hz circuit. Is the voltage rating of the capacitor sufficient for this connection?
A postage stamp mica capacitor has the following color marks starting at the upper left dot: yellow, violet, brown, green, no color, and blue. What are the capacitance value, tolerance, and voltage rating of this capacitor?
In a pure capacitive circuit, does the current lead or lag the voltage?
The symbol shown is a a. polarized capacitor. b. normally closed switch. c. normally open held closed switch. d. normally open contact.
You are an electrician working in an industrial plant. A 30-hp three-phase induction motor has a current draw of 36 amperes at full load. The motor is connected to a 480-volt line. A three-phase wattmeter indicates a true power of 22 kW. Determine the power factor of the motor and the amount of capacitance needed to correct the power factor to 95. Also determine the minimum voltage rating of the capacitors. The capacitors are to be connected in wye.
You find that a 25-F capacitor connected to 480 VAC is defective. The storeroom has no capacitors with a 480-VAC rating. However, you find two capacitors rated at 50 F and 370 VAC. Can these two capacitors be connected in such a manner that they can replace the defective capacitor? If yes, explain how they are connected and why the capacitors will not be damaged by the lower voltage rating. If no, explain why they cannot be used without damaging the capacitor.
1. What is the dielectric?
Three capacitors having capacitance values of 20F,40F, and 50F are connected in parallel to a 60 - Hz power line. An ammeter indicates a circuit current of 8.6 amperes. How much current is flowing through the 40F capacitor?
A pure capacitive circuit is connected to a 480-volt, 60-Hz power source. An ammeter indicates a current flow of 24 amperes. The circuit current must be reduced to 16 amperes by connecting a second capacitor in series with the first. What is the value of the existing capacitor? What value capacitor should be connected in series with the original capacitor to limit the circuit current to 16 amperes?