Related Questions

If you feel dizzy, try to take a few deep breaths. If you rewrote this sentence beginning with You should try to, the next words should be ---
A breaths deeply during dizziness
B deeply breathe when feel dizzy.
C do deep breathing when feeling dizziness
D take a few deep breaths when you feel dizzy
Which of the following is the main advantage of an auto-transformer over a two-winding transformer?
A Eddy losses are totally eliminated
B Copper losses are negligible
C Saving in winding material
D Hysteresis losses are reduced
The output transformer used in a power amplifier is a ___________ transformer
A 1:1 ratio
B Step-up
C Step-down
D None of the above
The changes in volume of transformer cooling oil due to variation of atmospheric tem-perature during day and night is taken care of by which part of transformer
A Conservator
B Breather
C Bushings
D Buchholz relay
Which of the following is the main advantage of an auto-transformer over a two winding transformer?
A Hysteresis losses are reduced
B Saving in winding material
C Copper losses are negligible
D Eddy losses are totally eliminated
Power amplifiers generally use transformer coupling because transformer per-mits
A Cooling of the circuit
B Impedance matching
C Distortionless output
D Good frequency response
In a step down transformer, there is a charge of 15A in the load current. This results in changing of supply current of
A Less than 15 A
B Greater than 21 A
C More Than 21A
D None
The applied voltage of a certain transformer is increased by 50%, while the frequency is reduced by 50%. The maximum core flux density will
A become three times
B become 1.5 times
C become half
D remian the same
For seccessful operation of two single phase transformer connected in parallel, the most essential condition is that their
A Percentage impledances are equal
B Polarities are properly connected
C Turns ration are exactly equal
D KVA rating are equal
একটি Transformer এর মুখ্য কুণ্ডলীর বিভব 10V এবং তড়িৎ প্রবাহ 4amp। গৌণ কুণ্ডলীর বিভব হলে এতে তড়িৎ প্রবাহ কত?
A 8
B 4
C 2
D 10

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