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A transformer has 490 turns in the primary coil and 140 in the secondary coil.
What kind of transformer is this?
By what factor does it change the voltage? Assume 100% efficiency.
By what factor does it change the current?
A transformer has 490 turns in the primary coil and 140 in the secondary coil. Part...
a transformer has 320 turns in the primary coil and 120 in the secondary coil. what kind of transformers is this, and what factor does it change the voltage? by whatfactor does it change current?
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.
An ideal step-down transformer has a primary coil of 350 turns and a secondary coil of 10 turns. Its primary coil is plugged into an outlet with 220 V (AC). If the current in the secondary coil is 14.35 A, what current does the primary coil draw?
A step-up transformer has 23 turns on the primary coil and 800 turns on the secondary coil. If this transformer is to produce an output of 5000V with a 14-mA current, what input current and voltage are needed? Input current = .49 A V = ? kV
A transformer has 1020 turns in the primary and 12 turns in the secondary. (a) Is this a step-up or step-down transformer? (b) If the primary is connected across 120 V rms, what is the open-circuit voltage across the secondary? ( ) V (c) If the primary current is 0.3 A, what is the secondary current, assuming negligible magnetization current and no power loss? ( ) A
A step-down transformer has 83 turns in its primary coil and 24 turns in its secondary coil. The primary coil is connected to standard household voltage (rms = 120.0 V, 60.0 Hz). Suppose the secondary coil is connected to a 12.0-Ω resistor. (a) What is the maximum current in the resistor? (b) What is the average power dissipated by the resistor?
Part A A transformer has 310 primary turns and 1390 secondary turns. The input voltage is 120 V and the output current is 150 A Assume 100% efficiency What is the output voltage? Express your answer to three significant figures and include the appropriate uni PHP R O ? Vs Value Units Submit Request Answer Part B What is the rout current Express your answer to three significant figures and include the appropriate units. HAR O m? Ip Value Units
1. A step down transformer with a turns ratio of 6 to 1 has 120V applied to its primary coil. A 25Ω load resistor is connected to the secondary coil. Calculate the following (3+2+2 -7 Points) Secondary coil voltage Secondary coil current Primary coil current a. b. c. 2. A step up transformer has a primary coil current of 1SA and an applied voltage of 220V. The secondary coil current is 5A. Calculate the following (3+3+2+2-10 Points) Secondary coil voltage...
A transformer has 500 turns in the primary and 50 turns in the secondary. If the input voltage is 120V, what is the output voltage? Answer: V If the transformer has an efficiency of 92%, what is the output current if the input current at 120V is 0.50A? Answer: А
The primary 40-turn coil of an ideal transformer is supplied with 120 V (rms). If the rms voltage output of the secondary coil is 15 V, how many turns are in the secondary coil, and what type of transformer is this? 8 turns, step-down transformer 5 turns, step-down transformer 15 turns, step-down transformer 320 turns, step-up transformer 160 turns, step-up transformer