13 Nov ac fundamentals pdf
(6) time required to complete one cycle (b) lagging This allows a rotation force to be generated by the conductor passing through the magnetic field. When connecting a single-phase power supply, repeat the phenomena ① to ④. (c) 8 kVAR (a) triangular wave In a R-L-C circuit Ans: c, 51. Power factor of an inductive circuit is usually improved by connecting capacitor to it in Pure inductive circuit Fleming's Left Hand Rule indicates the direction of electromotive force (for motors) when a conductor is passed through lines of magnetic flux. Provide the reader with a case study on the design and optimisation of an air-conditioning (A/C) system. value of current is less than average value value of alternating current is given by steady (D.C.) current which when flowing through a given circuit for a given time produces, (a) the more heat than produced by A.C. when flowing through the same circuit, (b) the same heat as produced by A.C. when flowing through the same circuit, (c) the less heat than produced by A.C. flowing through the same circuit, 11. (a) true power DC → does NOT change with time. (c) parallel resonance needs a low-resistance source for a sharp in¬crease in impedance (d) R2C circuit in resonance will (d) none of the above (b) average value/peak value 2 FUNDAMENTALS OF ELECTRICITY We will start with an overview to introduce you to the main points about these devices, and the parts that make them. Ans: c, 34. (a) consumes some power on average (c) ratio of J and Z (b) 30 Hz (d) none of above is zero (d) both (b) and (c) 53. (c) 1.11 (d) R-L-C circuit The time constant of the capacitance circuit is defined as the time during which voltage (c) 111 V (a) is unaffected by the supply frequency Ans: a, 59. 1 Air-conditioning fundamentals The aim of this chapter is to: Give an overview of the historical development of the heating and ventilation system and introduction of the air-conditioning (A/C) system. (c) reactive power is more than the actual power Multiple Choice Questions(MCQ) on Network Theorem 1. Ans: a, 61. (e) as (a) to (d) The transient currents are associated with the (d) a purely capacitive circuit’s ability to resist the flow of current (d) 15 (d) increases with decrease of inductance and increase of resistance (d) unity (d) the statement given is false For a frequency of 200 Hz, the time period will be In a purely inductive circuit (b) series resonance needs a high-resistance source for sharp increase in current Ans: b, 43. Awesome sir, kindly send me MCQ,s on me email id, i will be very thankful to you for this kindness. The operation principle of AC motors can be explained by using Arago's disk. (a) capacitance only (a) Square wave AC motors are electric motors that rotate by using power from a commercial AC power supply. (b) leads the car cooler, car air conditioner and auto air conditioner for the sake of a more comfortable environment. Ans: c, 78. value is In order to read or download fundamentals of electric circuit analysis solution manual ebook, you need to create a FREE account. Aphasoris The principle of Arago's disk can be explained by "Fleming's Right Hand Rule" and "Fleming's Left Hand Rule". (d) any where If we hook up an oscilloscope to a circuit with AC and plot its voltage over time, we might see a number of different waveforms. The time constant of a series R-C circuit is given by, 16. If there is a survey it only takes 5 minutes, try any survey which works for you. Electromagnetic brake motors are ideal for applications requiring load holding, such as vertical drive. Finally I get this ebook, thanks for all these Fundamentals Of Electric Circuit Analysis Solution Manual I can get now! Ans: b, 90. The N pole and S pole electromagnets are a simplified model of the stator. The peak value of a sine wave is 200 V. Its average value is (a) 127.4 V (b) 141.4 V (c) 282.8 V (d)200V . There are a number of ways you can cool our home, but with any central air conditioning Ans: a. Ans: b, 77. (d) the whole cycle Ans: b, 21. (d) high (b) unity (b) the current through the resistance is less (d) actual power is more than its reactive power RPM. (b) increases with the decrease of capacitance and increase of resistance (c) a purely capacitive circuit’s ability to pass current By incorporating a non-excitation type electromagnetic brake, it is possible to hold the load when the power is turned off. (d) zero (a) unsymmetrical part of the wave form (a) 60 sin 25 t (a) the current through the resistance is more (d) very high Ans: a, 88. An air conditioner is basically a refrigerator. (b) 100 Hz (a) 0.05 s (c) kV (b) capacitance is less and frequency of supply is more We also Provide Important MCQ that will help you to Prepare for Competitive Exam. (a) 0.001 s (d) square wave (a) demand (c) 90° (a) 100 n (d) becomes zero with the increase in supply frequency (a) 25% of maximum value (b) 60 sin 50 t (d) at all the time of operation The frequency of domestic power supply in India is Two waves of the same frequency have opposite phase when the phase angle between them is Ans: a, 8. (b) the quarter cycle Electromagnetic brakes are available with induction motors and reversible motors. (c) consume more power (b) low (c) power (d) capacitance Multiple Choice Questions (MCQ) on AC Fundamentals for Electrical Engineering. The following figure shows the construction of a standard AC motor. (a) both waves must have same frequency (e) results in all above AC/DC Fundamentals This five-day course begins with a fundamental review of conductors and insulators, electric current, resistance, Ohm’s and Kirchhoff’s Laws, electrical power, and magnetism. (b) 0.1 s (b) the reactance of the inductor (b) applied voltage increases but current decreases Which of the following circuit component opposes the change in the circuit voltage ? In any A.C. circuit always Which of the following refers to a parallel circuit ? (c) exchange of power takes place between capacitor and supply line Power factor of electric bulb is (a) 90 Next, move the U-shaped magnet along the edge of the copper plate. Q.78. (a) current (a) 0.5 Imax value of full wave rectified AC. (c) The equivalent resistance is greater than any one of the resistors They are widely used to power various devices. (6) r.m.s. (c) the current flowing in the inductor (b) 50% of maximum value (a) 0.636 Emax (b) Capacitance Ans: b, 50. AC/DC Fundamentals This five-day course begins with a fundamental review of conductors and insulators, electric current, resistance, Ohm’s and Kirchhoff’s Laws, electrical power, and magnetism. (a) increasing core length A magnetic pole opposite to that in ① is generated in the magnetic pole of the main winding. (b) inductance only (b) ratio of kW and kVA (c) capacitive Other topics include The input of an A.C. circuit having power factor of 0.8 lagging is 40 kVA
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