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Find the value of circuit elements and reactive volt ampere drawn for a balanced 3 phase load connected in delta & draws a power of 12 kw at 440 V. The power factor is 0.7 leading
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Three identical coil each $[4.2 +j 5.6] \Omega$ are connected in star across 415V, 3 phase, and 50Hr supply. Determine (i) Vph (ii) Iph (iii) power factor.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Three similar coils connected in star, take a total power of 1.5 kW at a pf of 0.2 lagging from a three phase, 440 V, 50 Hz supply. Calculate the resistance and inductance of each coil.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Each phase of a delta connected load consist
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Give relation between line current and phase current, line voltage and phase voltage in balanced star and delta connected load.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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11k
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Calculate the power factor of the choke coil and power factor of the circuit.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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A resistance of $10\Omega$ and pure coil of inductance 31.8 m H are connected in parallel across 200V1 50Hz supply. Find the total current and power factor.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Draw on A.C. waveform. Indicate these on and explain i) Instantaneous value ii) Peak value and iii) Time period for one cycle of the alternating quantity.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Find the resistance of resistor, resistance and reactance of the inductor.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Determine the impedance of the circuit.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Define the equation resonance frequency in parallel resonance circuit
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Give comparison between: Series and parallel resonance.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Differentiate between series and parallel resonance with respect to 1. Impedance at resonance. 2. Current at resonance. 3. Magnification factor.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Derive the equation for resonance frequency [fc] in parallel resonance circuit.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Calculate the branch current $I_1$ and $I_2$ for the circuit
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Calculate the resistance, inductance and capacitance of the circuit.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Calculate voltage across each coil.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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find the resonance at which the total current taken from the supply is in phase with supply is in phase with supply voltage also find value of this current.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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For the circuit shown determine the 1) Supply frequency (f) 2) Coil resistance (r) 3) Supply voltage (v)
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Find current I1 and I2 shown in figure
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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An alternating current takes 3.375ms to reach 15A for the first time after becoming instantaneously zero. The frequency of the current is 40Hz. Find the maximum value of the alternating current.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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A voltage of 150 V, 50 Hz is applied to a coil of negligible resistance and inductance 0.2H. Write current
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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2.2k
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Calculate the value of V4m and $\Phi4$
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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1.3k
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Draw phase diagram.
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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Find the average value of following wave form:
basic electrical engineering updated 5.6 years ago by teamques10 ★ 70k
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