List of top Physics Questions on applications of diode asked in KEAM

If $5,mA$ current is drawn from the voltage source in the circuit connected with two resistors each of $2.4,k\Omega$ and four ideal diodes, then the source voltage is
In a diode rectifier, the capacitors with large values of $C$ are used in filter circuits in order to
If the voltage applied to a diode having forward bias resistance of 1 $\Omega$ is changed from 0.6 V to 0.9 V, the change in current in it is
The rate of fall of the voltage across the capacitor in a filter used in a diode rectifier depends
Ripple frequency of a full wave rectifier is
The pn junction diode acts as a rectifier because:
The I-V characteristic of a semiconductor diode in forward bias is a/an:
A p-n junction diode without any voltage biasing acts as:
The reverse biasing in a junction diode,
An alternating voltage of \( 250\,\text{V},\,50\,\text{Hz} \) is applied to a full wave rectifier. If the internal resistance of each diode is \( 10\,\Omega \) and the load resistance is \( 5\,\text{k}\Omega \), the peak value of output current is
In a full wave rectifier, for an input ac voltage
If a diode is forward biased, then the
If the Ge diode in the circuit is reverse biased, the current through \(2\ \text{k}\Omega\) resistor
A light emitting diode is (A) a n-p-n type semiconductor with a forward bias
In the context of p-n junction, select the correct statement from the following: (A) The barrier potential remains constant under forward bias
If the rms value of sinusoidal input to a full wave rectifier is $V_0/\sqrt{2}$ then the rms value of the rectifier’s output is}
For a P-N junction diode
For a Zener diode
In a Zener diode regulated power supply, unregulated d.c. input of $10$ V is applied. If the resistance $R_s$ connected in series with a Zener diode is $200\,\Omega$ and the Zener voltage $V_z = 5$ V, the current across the resistance $R_s$ is
In a PNP transistor, \(10^{10}\) holes enter the emitter in \(10^{-6}\,s\). If 2% of holes is lost in the base, then the current amplification factor is
The collector resistance and the input resistance of a CE amplifier are respectively 10 k\(\Omega\) and 2 k\(\Omega\). If \(\beta\) of the transistor is 49, the voltage gain of the amplifier is
The light emitting diode (LED) is
The light emitting diode (LED) is
The collector resistance and the input resistance of a CE amplifier are respectively 10 k\(\Omega\) and 2 k\(\Omega\). If \(\beta\) of the transistor is 49, the voltage gain of the amplifier is
The collector resistance and the input resistance of a CE amplifier are respectively 10 k\(\Omega\) and 2 k\(\Omega\). If \(\beta\) of the transistor is 49, the voltage gain of the amplifier is