ECEN 340 Exam 1 Review questions n
answers
A buck converter has an output voltage that is less than the input - correct answer ✔✔ True
A boost converter has an output voltage that is less than the input - correct answer ✔✔ False
For dc-dc converter, if the inductor is sufficiently large, it can be treated as _________. - correct
answer ✔✔ a current source
For dc-dc converter, if it its capacitor is sufficiently large it can be treated as __________. -
correct answer ✔✔ a voltage source
what is the principle we used in analyzing dc-dc converters? - correct answer ✔✔ The average
voltage across an inductor over a cycle is zero.
If the references satisfy the passive sign convention, power for an element is computed as p=vi
and energy is provided by the element. - correct answer ✔✔ False
The average power of a purely inductive load in AC is considered to be non-zero. - correct
answer ✔✔ False
In a balanced three-phased system, the phasor sum of all the three line-to-line voltages of a Y-
connected source is always zero. - correct answer ✔✔ True
Power factor correction can be done by connecting a __________ in __________ with the
inductive load. - correct answer ✔✔ capacitor, parallel
answers
A buck converter has an output voltage that is less than the input - correct answer ✔✔ True
A boost converter has an output voltage that is less than the input - correct answer ✔✔ False
For dc-dc converter, if the inductor is sufficiently large, it can be treated as _________. - correct
answer ✔✔ a current source
For dc-dc converter, if it its capacitor is sufficiently large it can be treated as __________. -
correct answer ✔✔ a voltage source
what is the principle we used in analyzing dc-dc converters? - correct answer ✔✔ The average
voltage across an inductor over a cycle is zero.
If the references satisfy the passive sign convention, power for an element is computed as p=vi
and energy is provided by the element. - correct answer ✔✔ False
The average power of a purely inductive load in AC is considered to be non-zero. - correct
answer ✔✔ False
In a balanced three-phased system, the phasor sum of all the three line-to-line voltages of a Y-
connected source is always zero. - correct answer ✔✔ True
Power factor correction can be done by connecting a __________ in __________ with the
inductive load. - correct answer ✔✔ capacitor, parallel
