Chapter5- IC voltage regulators and SMPS MCQ questions with answers

 What is the full form of SMPS?

a)      Silicon mode power supply

b)      Switch modeled power supply

c)       Synchronized mode power supply

d)      Switch mode power supply

 

To get -12v DC constant output, __________ fixed voltage regulator IC is used

a)      7812

b)      7912

c)       LM712

d)      LM317

 

Voltage regulators are used to _________

a)      Maintain constant input voltage

b)      Maintain constant output voltage

c)       Increase input voltage

d)      Increase output voltage

 

Voltage requires______________ for proper operation

a)      Line regulation only

b)      Constant load only

c)       Load and line regulation

d)      Load regulation only

 

Output of voltage regulator varies with the variation in input voltage.

a)      True

b)      False

 

A power supply having voltage regulation of __________ is unregulated power supply

a)      2 %

b)      5 %

c)       6 %

d)      10%

 

_____________ is used is used in reference voltage generator section in LM 723 voltage regulator, which works like voltage regulator and gives constant output

a)       Zener diode

b)       PN junction diode

c)       Error amplifier

d)       Voltage reference amplifier

 

In SMPS circuit, _________ is generally used for high frequency switching

a)      BJT

b)      FET

c)       MOSFET

d)      Diode