Metal Oxide Semiconductor (MOS) Transistor MCQ Quiz – Objective Question with Answer for Metal Oxide Semiconductor (MOS) Transistor

21. The depletion mode n-MOS as an active load is better than enhancement load n-MOS in:

A. Sharp VTC transition and better noise margins
B. Single power supply
C. Smaller overall layout area
D. All of the mentioned

Answer: D

The depletion-mode n-MOS transistor as load requires a single power supply, a smaller overall layout area, and a sharp VTC transition.

 

22. The enhancement mode n-MOS load inverter requires 2 different supply voltages to:

A. Keep load transistor in the cutoff region
B. Keep load transistor in the linear region
C. Keep load transistor in the saturation region
D. None of the mentioned

Answer: B

The enhancement mode n-MOS load inverter requires 2 different supply voltages to keep the load transistor in the linear region.

 

23. The CMOS inverter consists of:

A. Enhancement mode n-MOS transistor and depletion mode p-MOS transistor
B. Enhancement mode p-MOS transistor and depletion mode n-MOS transistor
C. Enhancement mode p-MOS transistor and enhancement mode p-MOS transistor
D. Enhancement mode p-MOS transistor and enhancement mode n-MOS transistor

Answer: D

The CMOS inverter consists of enhancement mode P-MOS and enhancement mode n-MOS.

 

24. In the CMOS inverter the output voltage is measured across:

A. Drain of n-MOS transistor and ground
B. Source of p-MOS transistor and ground
C. Source of n-MOS transistor and source of p-MOS transistor
D. Gate of p-MOS transistor and Gate of n-MOS transistor

Answer: A

In the CMOS inverter, the output voltage is measured across the Drain of the n-MOS transistor and the ground.

 

25. When the input of the CMOS inverter is equal to Inverter Threshold Voltage Vth, the transistors are operating in:

A. N-MOS is cutoff, P-MOS is in Saturation
B. P-MOS is cutoff, n-MOS is in Saturation
C. Both the transistors are in the linear region
D. Both the transistors are in the saturation region

Answer: D

When the input of the CMOS inverter is equal to Inverter Threshold Voltage Vth, both the transistors are operating in the saturation region.

 

26. The switching threshold voltage VTH for an ideal inverter is equal to:

A. (VDD-VOL)/2
B. VDD
C. (VDD)/2
D. 0

Answer: C

The switching threshold voltage VTH for an ideal inverter is equal to (VDD./2.

 

27. The electrical equivalent component for MOS structure is:

A. Resistor
B. Capacitor
C. Inductor
D. Switch

Answer: B

The MOS structure acts as a capacitor with a metal gate and semiconductor acting as parallel plate conductors and oxide as a dielectric between them.

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