Physics question and answers for November 17, 2023
- Q The current flowing in the AC source shown in th circuit in ampere is L H 5 vooooo 500 C uF wwww 102 100 2 sin 100nt V 1 30...
- Q An RLC series circuit has a voltage source given by E t 30 V a resistor of 120 02 an inductor of 6 H and a capacitor of 0 01...
- Q The line currents of a three phase four wire system are square waves with amplitude of 100 A These three currents are phase shifted by 120 with respect to each...
- Q Ques 2 A coil of resistance 10 2 and L 0 1 m H is connected in series with a capacitor of 150 F across 200V 50 Hz supply Determine...
- Q For transistor action 1 Base emitter and collector regions should have similar size and doping concentrations 2 The base region must be very thin and lightly doped 3 The eimtter...
- Q A square wave current switching rapidly between 1 0 A and 1 0 A with period of 0 2 s is passed through an AC ammeter The reading of ammeter...
- Q 2 A 4uF capacitor a resistance of 2 5 m2 is in series with 12 V battery Find the the time after which the potential difference across the capacitor is...
- Q Column I a Resonant frequency b Quality factor c Average power d Impedance e Magnetic potential energy f Coefficient of self induction Column II i VI cos ii LI iii...
- Q In a L C R circuit capacitance is changed from C to 2C For the resonant frequency to remain unchanged the inductance should be change from L to Question Type...
- Q the source Voltage leads circuit current at known frequency f If f is lowered slightly the circuit impedance will 1 Increase 2 Decrease 3 Remain same 4 Need to know...
- Q The current I time t according to the graph given below Which one of the following graphs gives the variation of voltage in the coil with time 1994 A B...
- Q In case of phase lag compensation used in system gain cross over frequency band width and undamped frequency are respectively 1 decreased decreased decreased 2 increased increased increased 3 increased...
- Q The equation of emf in an ac circuit is given by E 200 2 sin 200rt volt what is the minimum time taken for the emf to change from 200...
- Q A town situated 20 km away from a power plant generating power at 440 V requires 600 kW of electric power at 200 V The resistance of the two wire...
- Q A common emitter amplifier has a voltage gain of 50 an input impedance of 10002 and an output impedance of 2002 The power gain of the amplifier is a 500...
- Q single strand The self inductance of a choke coil is 10 mH When it is conected with a 10V D C source then the los of power is 20 watt...
- Q OF The peak value of an alternating emf E given by E E cos oot is 10 V and its frequency is 50 Hz At a time t s the...
- Q ag ti An a 20 mH inductor and a 50 uF capacitor with an initial charge of 10 mC The resistance of the circuit is negligible this is som Let...
- Q The battery shown in figure is ideal The values are 10 V R 502L 2H current through the battery at t 2sect 1 Initially the current in the inductor is...
- Q A cone rolls without slipping on the horizontal surface so that its apex remains fixed and the axis of once is horizontal The radius of base of cone is 1...
- Q A solenoid has an inductance of 20H and a resistance of 40 It is connected to a 20V battery How long will it take for the magnetic energy to reach...
- Q Juctor in Figur ding all insulated metal wire around a core of soft magnetic material ferrite The cylindrical coil has 9 turns a length of 458 mm and a diameter...
- Q A 150 F capacitor in series with a 1502 resistance is connected to a 200 V 50 Hz supply a Determine the average power dissipated per cycle of the AC...
- Q In the given A C circuit the r m s voltage of the source is 60 V then the r m s current passing through the source is 10 x...
- Q The circuit shown consists of a switch S a battery B of emf E a resistance R and an inductor L B S A E R C The current in...
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