ICE-05

Q1.

(a) CANDIDATE COPY 20-7 Two point charges q₁ = 3 μ C and q₂ = -2 μ C are located at the points 5 1. A = (1, 2, -1) and B = (-2, 0, 4), respectively. Find the electric potential at point P = (0, 1, 2), assuming the potential is zero at infinity. The bandwidth of a series resonant circuit is 500 Hz. If the resonant frequency 5 1.

(b) is 6000 Hz, what is the value of Quality factor, Q? If R = 10 \Omega, what is the value of the inductive reactance at resonance? Calculate the inductance and capacitance of the circuit. A 25 kVA, 2400/240 V, 50 Hz distribution transformer is tested for efficiency and

Q1.

(a) CANDIDATE COPY 20-7 Two point charges q₁ = 3 μ C and q₂ = -2 μ C are located at the points 5 1. A = (1, 2, -1) and B = (-2, 0, 4), respectively. Find the electric potential at point P = (0, 1, 2), assuming the potential is zero at infinity. The bandwidth of a series resonant circuit is 500 Hz. If the resonant frequency 5 1.

(b) is 6000 Hz, what is the value of Quality factor, Q? If R = 10 \Omega, what is the value of the inductive reactance at resonance? Calculate the inductance and capacitance of the circuit. A 25 kVA, 2400/240 V, 50 Hz distribution transformer is tested for efficiency and

Q2. regulation using the following test data: 198 HEAR YOUTESUO Open-Circuit Test (on LV side): V_OC = 240 \text V, I_OC = 3.8 \text A, P_OC = 160 \text W Short-Circuit Test (on HV side): V_SC = 92 V, I_SC = 10.4 A, P_SC = 400 W Determine the core loss of the transformer Zano
(2) ) nasilil sil šion
(i) Calculate the equivalent resistance referred to the primary (Fig.
(21)
(ii) (iii) Calculate the equivalent resistance referred to the secondary
(iv) Determine the equivalent reactance referred to the primary Determine the equivalent reactance referred to the secondary
(v) (vi) Calculate the voltage regulation at full load, 0.8 power factor lagging
(vii) Calculate the efficiency at full load and half-load at 0.8 power factor lagging. Derive the expressions for currents i₁ and i₂ in the circuit shown below in figure, 5
3. (a) assuming a DC voltage source is applied instantaneously at t = 0 and there is no initial energy stored in the circuit. 10 H i₂ \mathbf1₁ led for the particular 42Ω 336 V 48 \Omega and \Omega and \Omega לולות החדרת ID751 ISE FRAMES RS TEXT DIR । एनसार rt e as -30 - 301 \overline2 ICE-05 2025

Q2. regulation using the following test data: 198 HEAR YOUTESUO Open-Circuit Test (on LV side): V_OC = 240 \text V, I_OC = 3.8 \text A, P_OC = 160 \text W Short-Circuit Test (on HV side): V_SC = 92 V, I_SC = 10.4 A, P_SC = 400 W Determine the core loss of the transformer Zano
(2) ) nasilil sil šion
(i) Calculate the equivalent resistance referred to the primary (Fig.
(21)
(ii) (iii) Calculate the equivalent resistance referred to the secondary
(iv) Determine the equivalent reactance referred to the primary Determine the equivalent reactance referred to the secondary
(v) (vi) Calculate the voltage regulation at full load, 0.8 power factor lagging
(vii) Calculate the efficiency at full load and half-load at 0.8 power factor lagging. Derive the expressions for currents i₁ and i₂ in the circuit shown below in figure, 5
3. (a) assuming a DC voltage source is applied instantaneously at t = 0 and there is no initial energy stored in the circuit. 10 H i₂ \mathbf1₁ led for the particular 42Ω 336 V 48 \Omega and \Omega and \Omega לולות החדרת ID751 ISE FRAMES RS TEXT DIR । एनसार rt e as -30 - 301 \overline2 ICE-05 2025

Q3. 3. A 25 kVA, 2400/240 V, 50 Hz distribution transformer is tested for efficiency and regulation using the following data: Open-Circuit Test (on LV side): V_OC = 240 V, I_OC = 3.8 A, P_OC = 160 W. Short-Circuit Test (on HV side): V_SC = 92 V, I_SC = 10.4 A, P_SC = 400 W. Determine the core loss of the transformer.
(i) Calculate the equivalent resistance referred to the primary.
(ii) Calculate the equivalent resistance referred to the secondary.
(iii) Determine the equivalent reactance referred to the primary.
(iv) Determine the equivalent reactance referred to the secondary.
(v) Calculate the voltage regulation at full load, 0.8 power factor lagging.
(vi) Calculate the efficiency at full load and half-load at 0.8 power factor lagging.