A 60 V peak full wave rectified voltage is applied to a capacitor input filter. If f = 120Hz, R_{L}=10Ω and C=10μF, the ripple voltage (V) is :
Peak to peak ripple voltage for capacitor input filter,
The correct answer is: 5
If a zener diode (V_{z} = 5V and l_{z} = 10 mA) is connected in series with a resistance and 20V is applied across the combination, then the maximum resistance one can use without spoiling zener action (in kΩ) is :
The principal use of a zener diode is in a voltage regulator. In a voltage regulator, the voltage across the load remains constant over a range of current.
The correct answer is: 1.5
If the peak output voltage of a fullwave rectifier is 10V, its dc voltage (V) is :
The correct answer is: 6.36
For the rectifier circuit shown in figure, the sinusoidal voltage (V_{1} or V_{2}) at the output transformer has a maximum value of 10 V. The load resistance R_{L }is 1kΩ. What is the value of l_{av} as a multiple of
The correct answer is: 20
What is the diode current (A) in the circuit:
Diode will be in conducting state, when forward biased voltage is applied to it and in nonconducting state, when reverse biased voltage is applied to it. Now, the two batteries may be replaced by a single battery of 2Vwhich will make the diode reverse biased and diode goes to nonconducting state and hence current is zero
The correct answer is: 0
A zener diode has a breakdown voltage of 9.1 V with maximum power dissipation of 364mW. What the maximum current A that the diode can withstand?
Maximum current
The correct answer is: 0.04
For a zener diode, V_{z} = 20 V and power rating of 0.2W. If the source battery provides a potential difference of 50 V. The minimum value of R_{s} in Ω that prevents zener diode from being destroyed is.
Maximum zener current
Minimum value of R_{s}=
The correct answer is: 3000
A silicon diode is in series with a 1.0kΩ resistor and a 5V battery. If the node is connected to the positive battery terminal, the cathode voltage with respect to the negative battery terminal is (in Volts)
The cathode voltage with respect to the negative battery terminal is
The correct answer is: 4.3
If R_{L} = 1kΩ, find the maximum zener current (in mA).
Voltage developed across always.
For maximum current l (and hence also zener current l_{z}),V_{in} = 25V.
Applying KVL across loop 1, we have
(25 10 ) = 10 x 10^{3} x l
Hence, maximum zener current.
l_{z }= (15  10)
= 5mA
The correct answer is: 5
Assuming that the two diode D1 and D2 used in the electric circuit shown in the figure are ideal, find out the value of the current flowing through 1resistor.
According to the question
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