power converters

Which of the following network is/are used in DAC ?

• Ladder network

• Binary weighted network

• Both ladder & binary weighted network

• successive approximation network

Which A/D converter is considered to be simplest, fastest and most expensive?

• Flash type ADC

• Dual-Slope ADC

• Counter type ADC

• Successive Approximation ADC

SMPS

• Storage device

• Input device

• Output device

• Internal hardware component

SMPS stand for?

• Safe mode power supply

• Save mode power supply

• Switched mode power supply

• Secure mode power supply

Which answer from the following list is a major advantage of switched mode power supplies over series regulated supplies?

• Switched mode supplies create smaller amplitude ripple waveforms than series regulators.

• Switched mode supplies dissipate less power in the control element than series regulators.

• Switched mode supplies provide better regulation at low power than series regulators.

• Switched mode supplies work digitally, so are more efficient than series regulators.

Which answer from the following list is a disadvantage of switched mode power supplies compared with series regulated supplies?

• Switched mode supplies are less suitable for high power applications.

• Switched mode supplies are more expensive to implement than series regulated supplies.

• It is more difficult to prevent high frequency electrical interference in switched mode supplies.

• Over voltage protection is not possible in switched mode power supplies.

High frequency transformers are used for output voltage isolation and scaling in the following type of power supplies:-

• a.Switched mode power supplies

• b.Linear power supplies

• c.Hybrid power supplies

• d.Both (a) and (c)

Which among the following power supplies will be most energy-efficient if operated under wide input voltage variation and at full load:

• Linear power supply

• Switched mode power supply

• Switched mode followed by linear power supply

• Linear followed by switched mode power supply

'Power good' signal line indicates:

• Voltage at ps-on line good

• Voltage at pw-ok line is good

• All voltage levels are good

• Voltage at pw-ok line is not good

Disadvantage of SATA is:

• Hot Swapping

• Speed

• Length

• Incompatibility with previous OS