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Electric Circuits
what three things are needed for a complete circuit?
Electric Circuits
In a full wave rectifier the output signal is filtered using a capacitor, C in parallel
with the load resistor RL. What is the effect of doubling the period of the input ac
signal on the peak-to peak ripple voltage, Vr(pp)
with the load resistor RL. What is the effect of doubling the period of the input ac
signal on the peak-to peak ripple voltage, Vr(pp)
Electric Circuits
In a full wave rectifier the output signal is filtered using a capacitor, C in parallel
with the load resistor RL. What is the effect of doubling the period of the input ac
signal on the peak-to peak ripple voltage, Vr(pp)
with the load resistor RL. What is the effect of doubling the period of the input ac
signal on the peak-to peak ripple voltage, Vr(pp)
Electric Circuits
5 The temperature at which the tungsten filament of a 12V and 36W lamp operates is
1730oC
. If the temperature coefficient of resistance of tungsten is
6×10−3/K
, find the resistance of the lamp at a room temperature of
20oC
10.00Ω
0.45Ω
0.39Ω
4.00Ω
6 A certain resistance thermometer at triple point of water has resistance of
152.0Ω
. What is the temperature of the system in degrees Celsius when the resistance of the thermometer is
230.51Ω
?
414.2oC
141.0oC
253.2oC
80.4oC
1730oC
. If the temperature coefficient of resistance of tungsten is
6×10−3/K
, find the resistance of the lamp at a room temperature of
20oC
10.00Ω
0.45Ω
0.39Ω
4.00Ω
6 A certain resistance thermometer at triple point of water has resistance of
152.0Ω
. What is the temperature of the system in degrees Celsius when the resistance of the thermometer is
230.51Ω
?
414.2oC
141.0oC
253.2oC
80.4oC
Electric Circuits
The capacitances of the four capacitors shown in the figure are given in terms of a certain quantity C. If C = 37 µF, what is the equivalent capacitance (a) between points A and B and (b) between points A and D?
Electric Circuits
what are the necessary condition for the proper working of zener diode ?
Electric Circuits
Which of the following type of fuse should be used in a plug to connect an electrical appliance with power rating of 3.4 kw running on a 240v - mains?
Electric Circuits
How dielectric constant of a parallel plate capacitor varies by varying frequency in physical terms?
Electric Circuits
Why conventional voltmeter and ammeter are not used for high frequency voltage and current measurements?
Electric Circuits
what is output across load resistance in clamping circuts?
