MCQs of Switching Voltage Regulators (Advanced Power Electronics - 3170906)

Showing 61 to 60 out of 70 Questions

61.

The disadvantage of rectifier at the input of SMPS

62.

The role of Bulk capacitor in SMPS is

(a)	Back up for temporary power outage
(b)	reduction in ripples of current
(c)	to make the voltage un regulated
(d)	to create resonance

63.

Which of the following is more preferable to limit the current at the starting time of converter operation ?

64.

Thermister offers

(a)	less resistance path when it is hot
(b)	least resistance path when it is hot
(c)	less resistance path when it is cold
(d)	less reactance path when it is cold

65.

The ESR stands for

(a)	Electrical Series Resistance
(b)	Equivalent Series Resistance
(c)	Electo System Resistance
(d)	Equivalent System Resistance

66.

The sole purpose of synchronous rectifier in SMPS is

(a)	To reduce power loss
(b)	To produce regulated dc
(c)	To make application usable for higher power
(d)	To control the flow of energy in synchronous manner

67.

System having feedback mechanism produces the regulated output.

68.

In multiple output switch mode regulator the dynamic cross regulation is poor beacause

(a)	Not having proper center tapping of transformer winding
(b)	Not selecting low voltage drop MOSFET or BJT
(c)	Not using the feedback mechanism
(d)	individual inductor filter for output

69.

Is it possible to reduce harmonic in the output voltage waveform of FCMLI without using filter?

(a)	Yes
(b)	No

70.

Choose the incorrect statement

(a)	SMPS is less sensitive to input voltage variations
(b)	SMPS is smaller as compared to rectifiers
(c)	SMPS has low input ripple
(d)	SMPS is a source of radio interference

Showing 61 to 60 out of 70 Questions