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WorksheetsMOSFET
Total questions: 10
Worksheet time: 6mins
1. The MOSFET stands for.....
Metal oxidized selenium FET
Metal oxide surface FET
Metal oxide semiconductor FET
Metal of surface FET
Describe the difference between enhancement-mode and depletion-mode MOSFETs.
Enhancement-mode MOSFETs are normally on; depletion-mode MOSFETs are normally off.
Enhancement-mode MOSFETs are normally off; depletion-mode MOSFETs are normally on.
Both enhancement-mode and depletion-mode MOSFETs are normally off.
Enhancement-mode MOSFETs can conduct without a gate voltage; depletion-mode MOSFETs require a gate voltage to turn off.
Which MOSFET type can operate in both enhancement and depletion modes?
E Mosfet
D Mosfet
E mosfet and D Mosfet
None of above
Which of the following materials is used as the insulating layer in a MOSFET?
Germanium oxide
Silicon oxide
Silicon dioxide
Germanium dioxide
In an N-channel MOSFET, how is current controlled?
By changing the gate current
By changing the voltage between gate and source (VGS)
By changing the resistance between drain and source
By varying the body voltage
What happens when the gate-to-source voltage (VGS) of an N-channel Enhancement MOSFET is zero?
The MOSFET is ON
The MOSFET is OFF
The MOSFET operates in saturation mode
The MOSFET is in cutoff region
Which of the following is a disadvantage of MOSFETs?
High input impedance
High switching speed
Susceptibility to damage from electrostatic discharge (ESD)
Low efficiency in high-power applications
A certain D Mosfet has IDSS = 10mA, VP = -4V. Calculate drain current ID when VGS = -2V
5mA
2.5mA
7.5mA
10mA
What happens to the width of the conductive channel in a Depletion-mode MOSFET when a negative gate voltage is applied?
It increases
It decreases
It remains unchanged
The MOSFET enters breakdown
What is the threshold voltage (VTH) of an Enhancement-mode MOSFET?
The minimum drain-to-source voltage required for conduction
The voltage at which the MOSFET turns OFF
The minimum gate-to-source voltage required to create a conducting channel
The maximum drain-to-source voltage before breakdown
