_1. Both AC and Dc described the flow of current in a circuit. 2. Electric charges in both AC and DC changes direction periodically. _3. DC can be produced by a device called alternator. 4. AC can be represented by waves. _5. Triangle waves are often used in digital and switching electronics to test their operation. _6. The most common waveform in AC is square wave. _7. The frequency of direct current ranges from 50 Hz to 60 Hz. _8. Electrons in AC keep changing its direction. _9. Electrons in DC is stationary. _10. AC has no frequency. _11. Both AC and DC uses rotating magnet along the wire. _12. DC provides constant voltage. _13. Thomas Edison introduces AC in America. _14. AC can be readily converted to high voltages.

_1. Both AC and Dc described the flow of current in a circuit. 2. Electric charges in both AC and DC changes direction periodically. _3. DC can be produced by a device called alternator. 4. AC can be represented by waves. _5. Triangle waves are often used in digital and switching electronics to test their operation. _6. The most common waveform in AC is square wave. _7. The frequency of direct current ranges from 50 Hz to 60 Hz. _8. Electrons in AC keep changing its direction. _9. Electrons in DC is stationary. _10. AC has no frequency. _11. Both AC and DC uses rotating magnet along the wire. _12. DC provides constant voltage. _13. Thomas Edison introduces AC in America. _14. AC can be readily converted to high voltages.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

2. A 60-Hz AC generator develops a peak voltage of 170-V. The generator is connected to a lightbulb whose resistance when operating is 2402. Calculate an expression for the variation of current through the bulb with time.
The daigram shows a coil connected to a voltage source. When the switch is closed, current flows through the coil creating a magnetic field inside the coil. The field polarized ends A and B to be north pole and south pole of the coil. This phenomena is called. A. Inductance B. Mutual inductance C. Self-inductance D. Magnetic inductance
Instructor HOMEWORK PROBLEMS FOR CHAPTER 2, 1. The value of a DC voltage or current varies over a period of time. b. False a, True 2. The value of an AC voltage or current varies from one instant of time to the next instant of time. a. True b. False 3. The PERIOD of a DC voltage or current is: a. Zero b. Infinity c. Neither of these 4. The FREQUENCY of a DC voltage or current is: a. Zero b. Infinity c. Neither of these 5. The PERIOD of a waveform can be expressed by: b. d. Txf 8. C. 6. The FREQUENCY of a waveform can be expressed by: b. - d. Txf a. C. 7. What are the units for the PERIOD of a waveform? a. Hertz b. Seconds c. Cycles per second d. None of these 8. What are the units for the FREQUENCY of a waveform? a. Seconds per cycle b. Seconds c. Hz (cycles per second) d. None of these 9. The PERIOD of a waveform is the time it takes to complete one full cycle. a. True b. False 10. The FREQUENCY of a waveform is the number of cycles completed in one minute of time. a. True b. False
1. For the series circuit shown, a) Redraw and label the circuit using standard schematic symbols. b) Draw the direction of the conventional current. flow through the circuit when the switch is closed. c) Calculate the equivalent resistance. d) Solve for cach resistor's I, V and P. 12 12 Volts
Inductance, the same way as capacitance and resistance in an AC domain are properties of a. none of the above b. geometry c. frequency
Magnitude and direction of an induced emf may be obtained by applying a. Faraday's law, b. Ampere's law c. Lenz's law d. Kirchhoff's 2nd law O (a) and (b) O (b) and (d) O (b) and (c) O (a) and (c)
7-
Q2. An alternating voltage V=50 v2sin(100t) V is connected to a 1 µF capacitor through an ac ammeter. What will be the reading of the ammeter?
11. What is true for the following AC circuit? 0000 Vo sin cut phasors Sin cos A toss the voltage. A. Current lags the voltage B) Voltage lags the current C. Voltage and current have the same phase
Which of the following statements is true for a step-down transformer? Select two answers. a. Primary voltage is higher than secondary voltage. b. Primary voltage is lower than secondary voltage. c. Primary current is higher than secondary current. d. Primary current is lower than secondary current.
In this lab, you learned that if a coil is connected to a DC source, the moment we turn on the switch the current going through the coil will be____. a. non-zero b. zero c. can be either or
Which particular part of a the motor can be used to identify an "AC motor"? O a. Split rings O b. Loop or coil O c. slip rings O d. Magnetic poles