Chapter 31, Problem 062 A generator supplies 140 V to a transformer's primary coil, which has...
A transformer has 480 turns in the primary coil, which provides 1280 V at 8.4 A. If the secondary coil operates at 580 V, how many turns are in the secondary coil? A transformer has 480 turns in the primary coil, which provides 1280 V at 8.4 A. If the secondary coil operates at 580 V, how many turns are in the secondary coil? 1500 7.3×104 220 1100
Chapter 31, Problem 063 A transformer has 520 primary turns and 7.6 secondary turns. (a) If V. is 120 V (rms), what is Vs with an open circuit? If the secondary now has a resistive load of 142, what is the current in the (b) primary and (c) secondary? (a) Number (b) Number (c) Number Units Units Units
A transformer has 490 turns in the primary coil and 140 in the secondary coil. Part A What kind of transformer is this? A. step-up B. step-down Part B By what factor does it change the voltage? Assume 100% efficiency. Part C By what factor does it change the current?
Problem 9. (0.2 pts). An ideal step-down transformer has a primary coil of 370 turns and a secondary 22 turns. Its primary coil is plugged into an outlet with 115 V, from which it draws a current coil of of 0.29 A. (a) What is the voltage in the secondary coil? (b) Calculate the current in the secondary coil? (c) Assuming that the transformer secondary is driving a resistive load, calculate the average power dissipated in the resistor.
The primary coil of a transformer has N1 = 380 turns, and the secondary coil has N2 = 2 250 turns. If the input voltage across the primary coil is Δv(t) = 170 cos ωt, where Δv is in volts and t is in seconds, what rms voltage is developed across the secondary coil? _________ V
An ideal step-down transformer has a primary coil of 370 turns and a secondary coil of 22 turns. Its primary coil is plugged into an outlet with 115 V, from which it draws a current of 0.29 A. (a) What is the voltage in the secondary coil? (b) Calculate the current in the secondary coil? (c) Assuming that the transformer secondary is driving a resistive load, calculate the average power dissipated in the resistor.
The primary coil of a transformer has N, = 310 turns, and the secondary coil has N, = 2 020 turns. If the input voltage across the primary coil is Av(t) = 170 cos wt, where Av is in volts and t is in seconds, what rms voltage is developed across the secondary coil? V Need Help? Read It Master It Submit Answer Practice Another Version
An ideal step-down transformer has a primary coil of 400 turns and a secondary coil of 25 turns. Its primary coil is plugged into an outlet with 110 V(AC), from which it draws an rms current of 0.83 A. 1.)What is the voltage in the secondary coil? 2.)Calculate the rms current in the secondary coil. 3.)Assuming that the transformer secondary is driving a resistive load, calculate the average power dissipated in the resistor.
A transformer has 450 turns in the primary coil which provides 1220 V at 8.0 A. If the secondary coil operates at 510 V what is a current of the secondary coil? 19 A 3.3 A 9.1 A 07.1A
Chapter 31, Problem 064 The figure shows an "autotransformer." It consists of a single coil (with an iron core). Three taps T are provided. Between taps 7: and Tz there are 203 turns, and between taps T2 and Ty there are 832 turns. Any two taps can be chosen as the primary terminals, and any two taps can be chosen as the secondary terminals. For choices producing a step-up transformer, what are the (a) smallest, (b) second smallest, and (c)...