Answered: 11. What is the peak value of a…

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)...

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11. What is the peak value of a household appliance that uses a 230 V ac source? A. 163 V B. 230 V C. 325 V D. 480 V 12. What is the waveform period difference between the 60 Hz electricity used in this country and the 50 Hz used in Europe? A. 3 ms B. 16 ms C. 4 ms D. 20 ms 13. Test equipment selection enables the technician to both generate signals and: A. Change circuit conditions C. Sense circuit conditions B. Inject signals D. Change signal frequencies 14. Why is ac current transfer more effective than dc current transfer over long distances? A. Due to the height of power lines C. Due to step-up and step-down transformers reduing I2R losses B. Due to the used of generators D. Due to very high voltages 15.A sine wave reaches maximum positive voltage at: A. 90° B. 0° C. -90° D. 360° 16. The phenomenon which occurs when the light rays travel from a more optically denser medium to a less optically denser medium. A. refraction B. interference C. polarization D. total internal reflection 17. Which of these undergoes total internal reflection? A. Gold B. Diamond C. Silver D. Platinum 18. Optical fibers are used in A. X-ray B. Angiogram C. Endoscopy D. None of the above 19. Mirage which occurs due to atmospheric refraction is a result of A. diffraction B. interference C. polarization D. total internal reflection 20. When the angle of incidence is greater than the critical angle, the incident ray is reflected to the medium, this phenomenon is known as. A. Total internal reflection B. Diffraction C. Refraction D. None of the above

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