- Q1 Write Down The Equation For A Sinusoidal Voltage Of 50 Hz And Its Peak Value Is 20 V Draw The Corresponding Voltage 1 (93.54 KiB) Viewed 55 times
Q1: Write down the equation for a sinusoidal voltage of 50 Hz and its peak value is 20 V. Draw the corresponding voltage versus time graph. Q2: The equation for an alternating current is given by i = 77 sin 314t. Find the peak value, frequency, time period and instantaneous value at t = 2 ms. Q3: A 400 mH coil of negligible resistance is connected to an AC circuit in which an effective current of 6 mA is flowing. Find out the voltage across the coil if the frequency is 1kHz. 04: A capacitor of capacitance 10/11 uF is connected across a 220 V, 50 Hz A.C. mains. Calculate the capacitive reactance, RMS value of current and write down the equations of voltage and current. Q5: Find the impedance of a series RLC circuit if the inductive reactance, capacitive reactance and resistance are 184 12, 144 and 302 respectively. Also calculate the phase angle between voltage and current. Q6: A 500 uH inductor, 80/1 pF capacitor and a 628 resistor are connected to form a series RLC circuit. Calculate the resonant frequency and Q-factor of this circuit at resonance. Q7: Find the instantaneous value of alternating voltage u = 10 sin(3 7x10 t) volt at i) Os ii) 50 us iii) 75 us. Q8: The current in an inductive circuit is given by 0.3 sin (200t - 40°) A. Write the equation for the voltage across it if the inductance is 40 mH.