Exams › GATE › Technical

In a MOSFET operating in the saturation region, the channel length modulation effect causes

1. an increase in the gate-source capacitance
2. a decrease in the transconductance
3. a decrease in the unity-gain cutoff frequency
4. a decrease in the output resistance

Correct answer: a decrease in the output resistance

Solution

In the saturation region, channel length modulation effectively shortens the channel length, which reduces the output resistance of the MOSFET. This occurs because the drain current becomes more sensitive to changes in the drain-source voltage, leading to a lower output resistance.

Related GATE Technical questions

• A bulb in a staircase has two switches, one switch being at the ground floor and the other one at the first floor. The bulb can be turned ON and also can be turned OFF by any one of the switches irrespective of the state of the other switch. The logic of switching of the bulb resembles
• Two systems with impulse responses h1(t) and h2(t) are connected in cascade. Then the overall impulse response of the cascaded system is given by
• In a forward biased pn junction diode, the sequence of events that best describes the mechanism of current flow is
• In IC technology, dry oxidation (using dry oxygen) as compared to wet oxidation (using steam or water vapor) produces
• The Bode plot of a transfer function G(s) is shown in the figure below. The gain |20 log |G(s)| is 32 dB and 8 dB at 1 rad/s and 10 rad/s respectively. The phase is negative for all ω. Then G(s) is
• In a voltage-voltage feedback as shown below, which one of the following statements is TRUE if the gain k is increased?

⚔️ Practice GATE Technical free + battle 1v1 →