Physics question and answers for November 22, 2023
- Q A student designs a series RLC circuit in such a manner that it takes resistance of 500 capacitive reactance of 300 and inductive reactance of 600 Calculate the impedance and...
- Q 21 Alternating current is flowing in inductance L and resistance R The frequency of source is 0 2 Which of the following statement is correct 1 For low frequency the...
- Q A step up transformer has turn ratio 1 10 A cell of e m f 5 volts is fed to the primary Voltage developed in secondary coil is A B...
- Q 48 The self inductance of the motor of an electric fan is 10 H In order to impart maximum power at 50Hz It should be connected to a capacitance of...
- Q An alternating voltage source V 20 sin wt volt is applied across a circuit The resulting current from the source is found to be i 10 sin ot sin 3...
- Q When frequency of AC voltage source applied to a series LC circuit is gradually increased from a low value to high the value of impedance of the circuit Monotonically increases...
- Q Variation of a current with time is shown in the graph below The rms value of the current between time t 0 to t 4 sis i 37 4 2...
- Q An AC circuit having supply voltage V consists of resistor of resistance 4 Q and capacitor of reactance 3 0 as shown in the figure The voltage across the capacitor...
- Q A step down transformer reduces the voltage of transmission line from 2200 V to 220 V The power delivere by it is 8800 W and its efficiency is 88 The...
- Q The power factor of the circuit shown in the figure is Xc 40 S2 HH 220 V 50 Hz 0 2 0 4 0 8 0 6 mmmmm X 100...
- Q An LCR series circuit with 100 W resistance is connected to an ac source o 400 V and angular frequency 300 rad s When only the capacitance is removed the...
- Q The voltage across a load and the current through the element is given by v t 60 cos wt 10 volts i t 1 5 cos wt 50 Amps Find...
- Q Two plates of a capacitor of capacitance C are given charges Q and Q This capacitor is connected across a resistance R Key is closed at t 0 Which option...
- Q An alternating current is given by I 50 sin 100 t Find the frequency of current mean current during a positive half cycle virtual current and the current at t...
- Q 8 If resistance R 1000 inductance L H and capacitance c F are connected in series with an AC source of 200 volt and frequency f as shown in the...
- Q Q No 21 Single Correct A A The power dissipated in the circuit Xc R A B C D NOW YOU YOU NOC 2R 5R 5R 10R R ww X...
- Q 37 The effective value of current in the given ac circuit is X 592 000000 1 10 A 2 10 2 A 3 5 2 A 4 Zero R 50...
- Q A capacitor C 2uF and an inductor with L 10 H and coil resistance 5 2 are in series in a circuit When an alternating current of r m s...
- Q A student is working on a circuit in which a resistance of 1002 is connected in series with an inductance across 200V 50Hz in such a way that it takes...
- Q For the circuit shown column II gives data for quantities given in column I Match them correctly A Column Reactance of circuit Impedance of circuit B C Current D Reading...
- Q In a LCR circuit half power frequencies frequency at which power dissipated is half the maximum power drissipated in the circuit are found to be 90 rad s and rad...
- Q The rms value of current given by equation 2 4 sinw A for a complete cycle is given by 2 A 4 A 2 3 A 4 3 A
- Q In an LCR series circuit R 10 Q XL 20 Q and Xc 10 Q The average value of current for a complete cycle for source voltage V 20 sin...
- Q 23 A capacitor C 2 F and an inductor with L 10 E and coil resistance 5 Q are in series in a circuit Whe an alternating current of r...
- Q The charge on the capacitor in LC circuit is given by d Q dt equation oscillation 2 Hz T 2 Hz 4 Hz 4 T Hz 16Q 0 Find the...
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