A Step-Up Transformer. A transformer connected to a 120-V (rms) ac line is to supply 13,000 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 8.50 mA. (a) What is the ratio of secondary to primary turns of the transformer? (b) What power must be supplied to the transformer when the rms secondary current is 8.50 mA? (c) What current rating should the fuse in the primary circuit have?
A Step-Up Transformer. A transformer connected to a 120-V (rms) ac line is to supply 13,000 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 8.50 mA. (a) What is the ratio of secondary to primary turns of the transformer? (b) What power must be supplied to the transformer when the rms secondary current is 8.50 mA? (c) What current rating should the fuse in the primary circuit have?
A Step-Up Transformer. A transformer connected to a 120-V (rms) ac line is to supply 13,000 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 8.50 mA. (a) What is the ratio of secondary to primary turns of the transformer? (b) What power must be supplied to the transformer when the rms secondary current is 8.50 mA? (c) What current rating should the fuse in the primary circuit have?
A neon sign transformer has a 360W AC output with an rms voltage of 17 kV when connected to a normal household outlet. 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 is the current in the secondary coil? C)The current in the primary coil?
A transformer is rated at 640W and transforms a higher AC V rms to 456V-AC. The number of turns in the lower voltage coils is 213. What is the peak alternating current in A in the higher voltage coils of the transformer if it has 235 turns?
A transformer connected to a 231 V (rms) AC line is to supply 10023 V (rms) for a neon sign. To reduce shocks 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 1.3 mA. What current rating in A should the fuse in the primary circuit have?
Chapter 31 Solutions
University Physics with Modern Physics (14th Edition)
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