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**A solar cell of area 2 1.0 cm , operating at 1.0 sun intensity, has a short circuit current of 20 mA, and an open circuit voltage of 0.65 V. Assuming room temperature operation and thermal equivalent voltage of 26mV, the open circuit voltage (in volts, correct to two decimal places) at 0.2 sun intensity is _______.**

1 Answer

**a)An ac circuit as shown in the figure has an inductor of inductance L and a resistor of resistance R connected in series. Using the phasor diagram, explain why the voltage in the circuit will lead the current in phase.b)The potential difference across the resistor is 160 V and that across the inductor is 120 V. Find the effective value of the applied voltage. If the effective current in the circuit be 1.0 A, calculate the total impedance of the circuit.c)What will be the potential difference in the circuit when direct current is passed through the circuit?**

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**In the circuit shown, 1 2 I 80mA and I 4mA . Transistors T and T 1 2 are identical. Assume that the thermal voltage V0 is 26mV at 27 C. At 50 C T , the value of the voltage V1 V2 V12 (in mV) is ________________.GATE EC 2015**

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**The following arrangement consists of an ideal transformer and an attenuator, which attenuates by a factor of 0.8. An ac voltage VWX1 = 100V is applied across WX to get an open circuit voltage VYZ1 across YZ. Next, an ac voltage VYZ2 = 100V**

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**In the circuit shown, V is a sinusoidal voltage source. The current I is in phase with voltage V.**

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**In the circuit shown, V is a sinusoidal voltage source. The current I is in phase with voltage V.**

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**A welding operation is being performed with voltage = 30 V and current = 100 A. The cross-sectional area of the weld bead is 20 mm2. The work-piece and filler are of titanium for which the specific energy of melting is 14 J/mm3. Assuming a thermal efficiency of the welding process 70%, the welding speed (in mm/s) is __________ (correct to two decimal places).**

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**The RC circuit shown below has a variable resistance R(t) given by the following expression: R(t) = R0 (1 − t/T ) for 0 ≤ t < T where R0 = 1 Ω, and C = 1 F. We are also given that T = 3 R0C and the source voltage is Vs = 1 V. If the current at time t = 0 is 1 A, then the current I(t), in amperes, at time t = T/2 is ___________ (rounded off to 2 decimal places).**

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**The enhancement type MOSFET in the circuit below operates according to the square law. μnCox = 100 μA/V 2 , the threshold voltage (VT) is 500 mV. Ignore channel length modulation. The output voltage Vout is:**

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**In the circuit shown the average value of the voltage Vab (in Volts) in steady state condition is _____________. GATE EC 2015**

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**In the circuit shown, at resonance, the amplitude of the sinusoidal voltage (in Volts) across the capacitor is ___________________.-GATE EC 2015**

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**In the circuit shown, Vs is a 10 V square wave of period, T = 4 ms with R = 500 Ω and C = 10 μF. The capacitor is initially uncharged at t=0, and the diode is assumed to be ideal. The voltage across the capacitor (Vc ) at 3 ms is equal to ____ volts (rounded off to one decimal place).**

1 Answer

**A three-phase 50 Hz, 400 kV transmission line is 300 km long. The line inductance is 1 mH/km per phase, and the capacitance is 0.01 μF/km per phase. The line is under open circuit condition at the receiving end and energized with 400 kV at the sending end, the receiving end line voltage in kV (round off to two decimal places) will be ___________.**

1 Answer

**Consider a long-channel MOSFET with a channel length 1 μm and width 10 μm. The device parameters are acceptor concentration NA= 5 × 1016 cm-3 , electron mobility μn=800 cm2 /V-s, oxide capacitance/area Cox= 3.45 × 10−7 F/cm2 , threshold voltage VT=0.7 V. The drain saturation current (IDsat) for a gate voltage of 5 V is _____mA (rounded off to two decimal places). [ε0 = 8.854 × 10−14F/cm, εSi = 11.9]**

1 Answer

**A delta-connected, 3.7 kW, 400 V(line), three-phase, 4-pole, 50-Hz squirrel-cage induction motor has the following equivalent circuit parameters per phase referred to the stator: R1 = 5.39 Ω, R2 = 5.72 Ω, X1 = X2 = 8.22 Ω. Neglect shunt branch in the equivalent circuit. The starting line current in amperes (round off to two decimal places) when it is connected to a 100 V (line), 10 Hz, three-phase AC source is _______ .**

1 Answer

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**Fill in the blanks GATE-Instrumentation-Engineering-2014**

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### Notes

**Memristor theory**

**GE6252 Basic Electrical and Electronics Engineering Anna university notes**

**EC2151 ELECTRIC CIRCUITS AND ELECTRON DEVICES**

**EE2151 CIRCUIT THEORY**

**Eletronic circuit(10EC32)**

**Electronic Number Lock**

**Electronic Circuits**

**ABB PAPER - 02 MAY 2004 - VADODARA**

**Knight of Fire: Intensity**

**Micro Electronic Pill**

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## A solar cell of area 2 1.0 cm , operating at 1.0 sun intensity, has a short circuit current of 20 mA, and an open circuit voltage of 0.65 V. Assuming room temperature operation and thermal equivalent voltage of 26mV, the open circuit voltage (in volts, correct to two decimal places) at 0.2 sun intensity is _______.

## Gate Electronic

Asked On2019-04-10 11:24:34 by:Rohit498

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