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A half wave rectifier is used to supply 50vdc to resistive load of 800ohms the semiconductor diode has a forword resistance of 25ohms,calculate ac voltage required?
TCS,
1 8242A 12v regulated dc power supply has a voltage regulation of 0.5% find amagnitude of variation?
TCS,
1 5643why we prefer expressing the gain of an amplifier on a logarithmic scale rather than linear scale?
TATA,
2 6777
1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?
suppose that 156000 sq.ft rcc work builtup are.how many % of brick work to rcc work.
Give the coding for system reboot in C
sir i have applied for ntpc and engineers india can u suggest some books which have one words.
Explain what is swelling?
What is the cause of cylindrical liner overheating?
Why vestigial side band is used in tv signal transmission?
In electrical locomotive engines, the DC series motors is being used as traction motor. But in new engines like in WAP7 & WAG9 the 3-phase squiral cage induction motors has replaced them. So can someone tell me the advantages of induction motor over dc seris motor in engines points of view....???
What is general pressure ratio for axial, reciprocating and centrifugal compressors?
Whether superheated steam can be treated like ideal gas ?
What is frantic effect?
How is waste heat boilers categorized?
What is the tensile strength of wood?
How to take labor charges for construction of 1cum of concrete?
How to size fuse? How to size MCB?
