When the transformer is open circuited, it produces a secondary voltage of 240 V(rms) and source current Is=0.315
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RT +jX2 N1:N2 +X Is Vjoad +jX V 8000 V (rms) 60HZ When the transformer is open circuited, it produces a secondary volta...
A single-phase transformer is rated at 10 kVA, 240/100 V. When the secondary terminals are open-circuited...
A single-phase transformer is rated at 10 kVA, 240/100 V. When the secondary terminals are open-circuited and the primary winding is supplied at normal voltage, the input current is 2.6 A at a power factor of 0.3 lag. When the secondary terminals are short-circuited, a voltage of 18 V applied to the primary causes the full-load current to flow in the secondary, the power input to the primary being 240 W. Calculate (a) the regulation (b) the efficiency of the...
A large transformer operating at no-load draws an exciting current of 5 A when the primary is connected to a 240 V, 50 Hz source (HELP)
Question 1: A large transformer operating at no-load draws an exciting current of 5 Awhen the primary is connected to a 240 V, 50 Hz source. From wattmeter testit is known that the iron losses are equal to 300 W. At short circuit the voltage applied is 24 Volts , the short-circuit current is 35 Amperes, the power meter reads 400 W. Calculate:i) The reactive power absorbed by the core;ii) The value of Rc and Xm of the magnetising branch; iii)...
A single-phase transformer is rated at 10 kVA, 240/100 V. When the secondary terminals are open-circuited and the primary winding is supplied at normal voltage, the input current is 2.6 A at a power factor of 0.3 lag. When the secondary terminals are short-circuited, a voltage of 18 V applied to the primary causes the full-load current to flow in the secondary, the power input to the primary being 240 W. Calculate (a) the regulation (b) the efficiency of the...
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