BEL-22216 Chapter5: Regulators and power supply- MCQ Questions with answers

 If zener diode is connected in reverse bias, it works as_______

a)      Rectifier

b)      Amplifier

c)       Closed switch

d)      Voltage regulator

 

Voltage regulators are used to _________

a)      Maintain constant input voltage

b)      Maintain constant output voltage

c)       Increase input voltage

d)      Increase output voltage

 

________is the ability of power supply to maintain the specified output voltage with varying input voltage

a)      Load regulation

b)      Line regulation

c)       Stabilization

d)      None of above

 

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

 

In transistorized series voltage regulator, load current passes through series connected___________

a)      Resistor

b)      Zener diode

c)       Transistor

d)      None of above

 

________ diode is used in transistorized shunt voltage regulator

a)      PN junction diode

b)      Zener diode

c)       Tunnel diode

d)      Schottky diode

 

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

a)      2 %

b)      5 %

c)       6 %

d)      10%