MOS Transistor and CMOS Logic Quiz

Which of the following best describes a MOS transistor?

• Bipolar device

• Voltage-controlled current source

• Current-controlled voltage source

• Voltage-controlled voltage source

What type of switch does a MOS transistor act like when turned ON?

• Open circuit

• Ideal resistor

• Closed switch

• Capacitor

CMOS logic consists of:

• Only NMOS transistors

• Only PMOS transistors

• PMOS and NMOS transistors in series

• Complementary NMOS and PMOS transistors

What is a key advantage of CMOS logic over nMOS logic?

• Higher power consumption

• Faster speed

• Lower static power consumption

• More transistors

In alternate circuit representation of CMOS, which element is usually omitted for clarity?

• Gate

• Source

• Body terminal

• Drain

What happens to a CMOS inverter's output when the input is logic high?

• Output becomes floating

• Output is logic high

• Output is logic low

• Output is undefined

In CMOS design, what does 'complementary' refer to?

• Use of additional logic blocks

• Use of both NMOS and PMOS transistors

• Use of logic gates

• Use of inverters only

Compared to NMOS logic, CMOS logic has:

• Lower density

• Higher power dissipation

• Lower static power consumption

• Only n-type carriers

Which of the following is a disadvantage of CMOS?

• High static power

• Susceptible to latch-up

• Slow switching speed

• Only operates at high voltage

In CMOS circuits, the NMOS pulls the output:

• High

• Low

• To mid-level

• To the input