Power Electronics Lab

1) The Main Difference between SCR and SCS in?

• a)Gate Terminal

• b)Anode Terminal

• c)Cathode Terminal

• d)Base Terminal

2) Sometimes TRIAC also called ?

• a) Triggering unijunction Thyristor

• b) Triggering bi-directional Thyristor

• c) DIAC

• d) None of these

3) The difference between TRAIC and SCR is?

• a) Anode

• b) Cathode

• c) Polarity of gate triggering signals

• d) Collector Terminal

4) FET control?

• a) Voltage

• b) Current

• c) Greater Thermal Stability

• d) Both B and C

5) IGBT is the second most widely used device after?

• a) SCR

• b) Diode

• c) BJT

• d) MOSFET

6) Diode pass ......... in one direction?

• a) Voltage

• b) Current

• c) Both

• d) None of these

7) Amplifiers and oscillators using BJT, operate in ...... region

• A.Inverted mode

• B.Active

• C.Cut off

• D.Saturation

8) A triac is a ..... switch

• A.Unidirectional

• B.Bi-directional

• C.Either of the above

• D.None of the above

9) MOSFET has greatest application in digital circuit due to

• A.Low power consumption

• B.Less noise

• C.Small amount of space it takes on a chip

• D.All of the above

10) A UJT has ?

• a) Two pn junctions

• b) One pn junction

• c) Three pn junctions

• d) None of the above