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Life Interactive UPS Systems
The block diagram of lien integrative UPS is shown in figure when the main supply is ON static switch remains closed and load is connected to mains through an inductance L. In this condition the battery bank the DC through inverter which is used in as charger now.
Under the condition of power failure the main static switch becomes open. In this condition the battery bank supplies the power to the load through the inverter.
High Pressure Gas Hazards When we consider the dangers of compressed gas in the lab, there are three main sources of danger as follows: 1) Sudden release of high pressure ga
Select the response describing the steady state effect of increasing the air gap for otherwise identical devices, one operating with constant DC voltage excitation and one with con
Q. A diode is connected in series with a voltage source of 5 V and a resistance of 1 k. The diode's saturation current is given to be 10 -12 A and the I-V curve is shown in Find
A dc machine, operating as a generator, develops 400 V at its armature terminals, corresponding to a field current of 4 A, when the rotor is driven at 1200 r/min and the armature c
Q. (a) Consider a three-phase star or wye half-wave recti?er with a purely resistive load R. Determine: (i) efficiency, (ii) formfactor, (iii) ripple factor, (iv) TUF, and (v) PIV
find the resultant of two forces 20N and25N acting at an angle 60 degree each other
transfer function of Lube Oil Cooler Temperature
The material with lowest resistivity is (A) Constantan. (B) Silver. (C) manganin. (D) nichrome. Ans: The material with lowest resist
Q. What are the different types of MOSFET transistors ? The metal-oxide semiconductor field-effect transistor (MOSFET) is a three-terminal active device which has many applicat
Q. Figure can also be considered as a simple model of a magnetically operated relay that is commonly used for the automatic control and protection of electric equipment. Consider t
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