Engineering FE Engineering Common Sem 1 2022 Summer 2022 Basic Electrical Engg Question Paper - Mumbai University | munotes
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Questions asked in this paper
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Q1 The sunusidal current reaches first time at t=3.375 ms and second time at t=9.125
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Q2 The sunusidal current reaches 15 A first time at t=3.375 ms and second time at t=9.125 maximum current. Supply frequency is constant voltage across it? Supply frequency is constant
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Q5 A circuit consists of resistance R and capacitive reactance of 60 connected in series A transformer has full load copper loss of 64 W, what will be copper loss at half
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Q7 If 2 Watt meters are used for 3 phase power measurement, if pf is unity, the relation will be the voltage drop across 14.5 Q
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Q1 In a particular R-L circuit voltage of 10 V at 25 Hz produces 100 mA, while the same voltage at 75 Hz produces 60 mA. Draw the circuit diagram and insert values
- ii. Two voltage sources have and a phase difference a, when they are connected in series, the voltage is 200 V. when one source is revered, the voltage is KVA, single phase transformer has an efficiency of 98 % at full load, 0.8 pf
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Q1 Explain how two watt-meters can be used to measure power and power factor in a Find current through by mesh analysis Solve any Two Questions out of Three 10 marks each Find current through 4 Q by Thevenin’s theorem A 600 KVA, single phase transformer has an efficiency of 92 % at both full load B and half load at unity pf.Determine the efficiency at 75% of full load, 0.9 pf Coil A takes 2 Amps.at a power factor of 0.8 lagging with an applied voltage of 10 Cc Volts. A second coil B takes with a power factor of 0.7 lagging with an applied voltage of 5 Volts. What voltage will be required to produce a total current of With B in parallel Solve any Two Questions out of Three 10 marks each An equipment KW when connected across a 110 V, 100 Hz supply and A takes a lagging current of .25 A. If a capacitor is connected in parallel with equipment to make the pf unity, Determine the value of capacitance A source of series R L C circuit. The capacitor ‘c’ is variable. When capacitor is 500 pf. maximum current is passed through circuit. For 600 pf. The half of the previous case. Calculate parameters R , Bandwidth & Quality factor at resonance A 100 resistor is connected in series with a choke coil when a 400 V , 50 Hz C supply is applied to this combination the voltage across the resistance and the choke coil are and 300 V respectively. Find the power consumed by the choke coil Also calculate the power factor of choke coil and power factor of the circuit
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