a)
b)
Power P = IV
the current in the secondary coill is
the current in the primary coill is
the current in the primary coill is
c)
the peak current in the primary coill is
Question 32 (6 points) 32. A neon sign transformer has 450 W AC output with an...
32. A neon sign transformer has 450 W AC output with an rms voltage of 15 KV when connected to normal household outlet (120 V). There are 500 turns of wire in the primary coil. (a) How many turns of wire does the secondary coil have? (b) When the transformer is running at full power, what are the currents in the secondary coil and in the primary coil? (c) What is the peak current in the primary coil?
A neon sign transformer has a 420W AC output with an rms voltage of 13 kV when connected to a normal household outlet. There are 500 turns of wire in the primary coil. Part A How many turns of wire does the secondary coil have? ( it is not 48750, 45500n 49636, or 5.0x10^4) Part B How many turns of wire does the secondary coil have? Part C The current in the primary coil?
5. (10 pts) A transformer is designed to have an output voltage of 1350 V (rms) when the primary coil is connected to a 150V (rms) source. (i) Is this a step-up or step-down transformer? f there are 2700 turns on the secondary winding (coil), how many turns are required on the primary? (ii) If a load resistor across the secondary draws a peak current of 1.5.A, what is the peak and the rms current in the primary?
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?
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 delta-wye connected transformer is shown in Figure below. This is a 220 kV to 450 kV transformer, line-line, RMS. The 'X' side is the 220 kV side. Assume that Phase A voltage on the X' side has zero phase angle (that is, use VaX as the phase reference) 1) What is the turns ratio NX: NH? 2) Draw phasor diagrams of the primary and secondary voltages. Be sure to get relative phase angles right. 3) If a balanced load...
A transformer connected to a 120V (rms) AC line is to supply 12 kV (rms) for a neon sign. To reduce shock hazard, a fuse is to be inserted in the primary circuit; the fuse is to blow when the rms current in the secondary circuit exceeds 2.0 mA. What is the current (rms) in the primary circuit when the fuse blows?
A transformer connected to a 125 V (rms) ac line is to supply 12000 V (rms) for a neon sign. To reduce shock hazard, a fuse is to be inserted in the primary circuit; the fuse is to blow when the rms current in the secondary circuit exceeds 5.00 mA. (a) What is the ratio of secondary to primary turns of the transformer? (secondary/primary) (b) What power must be supplied to the transformer when the rms secondary current is 5.00...
An AC adapter for a telephone answering machine uses a transformer to reduce the line voltage of 120 V to a voltage of 6.00 V. The RMS current delivered to the answering machine is 600 mA. If the primary (input) coil of the transformer has 360 turns, then how many turns are there on the secondary (output) coil? Tries 0/20 What is the power drawn from the electric outlet, if the transformer is assumed to be ideal? Tries 0/20 What...
An AC adapter for a telephone answering machine uses a transformer to reduce the line voltage of 120 V to a voltage of 5.00 V. The RMS current delivered to the answering machine is 380 mA. If the primary (input) coil of the transformer has 960 turns, then how many turns are there on the secondary (output) coil? Submit Answer Tries 0/20 What is the power drawn from the electric outlet, if the transformer is assumed to be ideal? Submit...