Power Electronics

Choose the correct statement:

• MOSFET is an uncontrolled device

• MOSFET is an voltage controlled device

• MOSFET is a current controlled device

• MOSFET is a temperature controlled device

Which of the following terminals does NOT belong to a MOSFET.

• Base

• Gate

• Source

• Drain

The turn on delay in MOSFET is due to:

• Input inductance to charge to threshold value

• Input capacitance to charge to threshold value

• Input inductance to discharge to threshold value

• Input capacitance to discharge to threshold value

SCR is a:

• PNP device

• NPN device

• PN device

• PNPN device

An SCR is a:

• four layer-three junction device

• three layer-two junction device

• four layer-four junction device

• three layer-three junction device

TRIAC can be represented by:

• Two SCRs in anti-parallel

• Two SCRs in parallel

• Two diodes in anti-parallel

• Two diodes in parallel

A DIAC can be represented by:

• Two diodes in anti-parallel

• Two diodes in parallel

• Two SCRs in anti-parallel

• Two SCRs in parallel

The terminals of a TRIAC are:

• MT!, MT2 and gate

• Anode, cathode and gate

The arrow on the symbol of MOSFET indicates:

• that it is an n- MOSFET

• that it is a p- MOSFET

• the direction of flow of electrons

• the direction of flow of holes

MOSFET is:

• unipolar, voltage controlled two terminal device

• unipolar, voltage controlled, three terminal device

• bipolar, voltage controlled two terminal device

• bipolar, voltage controlled, three terminal device