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A 2300/240V, 48kVA, 60HZ, R1 = 0.6 ohms, R2 = 0.025 ohms transformer requires a voltage of 238V for rated current to flow in the secondary when it is short circuited. Determine:
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...
RT +jX2 N1:N2 +X Is Vjoad +jX V 8000 V (rms) 60HZ When the transformer is open circuited, it produces a secondary voltage of 240 V(rms) and source current Is=0.315<81.8° A (rms) a) Find the turms ratio N2/N1 b) Find real and reactive power absorbed by transformer c) Using values obtained in (b) estimate the values of Rc and Xm RT +jX2 N1:N2 +X Is Vjoad +jX V 8000 V (rms) 60HZ When the transformer is open circuited, it produces...
1. Calculate the VA output required from a current transformer of 5A rated secondary current when the burden consists of relays requiring 10VA at 5A plus a loop lead resistance of 0.8 ohms. 2. What output VA would be required from a current transformer of 1A rated secondary current for a burden of 10VA at 1A plus lead resistance as in part 1. 3. An earth fault relay has a burden of 1VA at setting and is set at 0.2A....
ASSIGNMENT Develop the internal impedance model for the provided transformer, using appropriate short circuit and open circuit test at rated current and voltage respectively. The auxiliary transformer is a General Electric JE-27 auxiliary potential transformer rated 240-120Vac and thermal rating of 150VA Please provide the model results as follows: - Ohms referred to the 240V side Ohms referred to the 120V side - Per Unit based on the auxiliary transformer rating of 240- 120V and 150VA. ASSIGNMENT Develop the internal...
electromechanical actuators
Use approximate equivalent circuit. Find the equivalent circuit parameters of this transformer referred to the low voltage side.
I need help to find the values! gures below (a-d), determine the values for R1, R2, voltage or type of op-amp based on the information listed. You may ors with an open circuit, short circuit, or values 1kn SRS1Mn. gain, voltage, a) 76 k2 Type: Non-Inverting Vout max R1 (based on Voutmas) 0.3V Type: Inverting, Av =-100 V/V Vin- b) R1 12V R1 12V Type: Buffer Vout- R1 =- c) +10 V R1 ーVout -10 V Type: Av- IV R2...
Based on the motor nameplate below, when operated at the rated voltage and current, determine the following: a. The real power, P, reactive power, Q, and apparent power, S, used by the motor. b. Sketch an equivalent circuit to model for the motor. c. The efficiency of the motor (calculated from shaft power/real power in). d. What value of capacitor would you use to correct the power factor to 1? e. Sketch a vector diagram showing the phasor current in...