Semiconductor Switches

MOSFET has a thin layer of silicon dioxide which acts as ______

• Resistance

• Semiconductor

• Inductor

• Capacitor

Which is a four terminal device?

• FET

• SCR

• IGBT

• MOSFET

IGBT stands for

• Insulated Gate Bipolar Transistor

• Insulated Gate Bidirectional Transistor

• Inductive Gate Bipolar Transistor

• Inductive Gate Bidirectional Transistor

A Power MOSFET is a

• Frequency controlled device

• Current controlled device

• Voltage controlled device

• Power controlled device

In a power MOSFET, switching time are of the order of few

• seconds

• milliseconds

• microseconds

• nanoseconds

Which of the following is the best considering the speed of operation?

• SCR

• IGBT

• MOSFET

• BJT

Which of the following is the majority carrier device?

• MOSFET

• IGBT

• UJT

• BJT

As compared to power MOSFET, BJT has

• Higher switching losses but lower conduction losses

• Higher switching losses and higher conduction losses

• Lower switching losses but lower conduction losses

• Lower switching losses but higher conduction losses

when a UJT is used for triggering an SCR, the wave shape of the signal obtained from a UJT circuit is

• sinusoidal wave

• saw tooth wave

• trapezoidal wave

• square wave

A MOSFET is

• a minority carrier device

• a majority carrier device

• both minority and majority carrier device

• neither a minority nor a majority carrier device