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Q. A 75-kVA transformer has an iron loss of 1 kW and a full-load copper loss of 1 kW. If the transformer operates on the following load cycle, determine the all-day efficiency:
8 hours full load at unity power factor
8 hours no load
8 hours one-half full load at unity power factor
Switching Characteristics Switching characteristics of BJT are shown in figure. Due to the presence of internal capacitances BJT cannot be turned instantly. Initially
ABCD propagation of an optical ray through a system can be described by a straightforward two by two matrix. In ray optics, the feature of a system is known by the correspondin
What is XMS? XMS: The memory system is splits in three major parts as: system area, XMS (extended memory system) and TPA (transient program area). The kind of microprocessor in
Q. Consider a series-carry synchronous counter with T flip-flops shown in Figure in which the AND gates carry forward the transitions of the flip-flops, thereby improving the speed
Q. Describe the operation of 8279. And also explain following terms: (i) N key Roll over. (ii) Key board debounce. (iii) FIFO RAM. Ans: 8279 is a programmabl
One battery having of four cells, connected in series. Emf of each cell is 1.45V and internal resistance of 0.04Ω. if a load resistance of 5Ω is connected to the battery, draw the
Explain the Excess three codes - BCD to Decimal Conversion The Excess-3 representation of a number is based on Binary Coded Decimal. It is formed by taking the number in Binary
Q. Frequency response of amplifiers? All amplifiers exhibit variations of performance as the signal frequency is changed. The frequency response of an amplifier may be defined
wein bridge oscill0scope
1. Introduction The objective of this assignment is to design and evaluate a stabilised discrete linear power supply. The power supply requires to be designed according to t
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