It may be required to store energy for a specified amount of time during power failure especially if the system is designed for a computer power supply.

Related MCQs

•                    is used for critical loads where temporary power failure can cause a great deal of inconvenience.
• Which of the following can be a source of supply in dc power supplies?
•                      is used in the rotating type UPS system to supply the mains.
• What is done in switching regulators to minimize its power dissipation during switching?
• Why zener diodes are provided in dc supply?
• For instrumentation system, precision variable voltage-reference system is necessary.
• For a fixed bias circuit the drain current was 1mA, VDD=12V, determine drain resistance required if VDS=10V?
• During high frequency applications of a B.J.T., which of the following three stages do not get affected by Miller’s approximation?
• During high frequency applications of a B.J.T., which parasitic capacitors arise between the base and the emitter?
• During high frequency applications of a B.J.T., which parasitic capacitors arise between the collector and the emitter?