For long distance transmission the transformer used is_____________?

Related Mcqs:

1. Power amplifiers generally use transformer coupling because transformer permits______________?

   A. Cooling of the circuit
   B. Impedance matching
   C. Distortionless output
   D. Good frequency response

2. 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

3. Long distance transmission is easy for________________?

   A. D.C voltage
   B. A.C voltage
   C. Half A.C voltage
   D. Half D.C voltage

4. Electric intensity at infinite distance from the point charge is_____________?

   A. zero
   B. infinite
   C. positive
   D. negative

5. Power loss in actual transformer is due to_________________?

   A. Small output
   B. Eddy currents and magnetic hysterias
   C. Soft iron core
   D. Back emf

6. The out put voltage of a transformer is 3 times the input voltage then turns ratio will be________________?

   A. 3-Jan
   B. 3
   C. 1
   D. 6

7. Transformer works on the principle of________________?

   A. Lenzs law
   B. Faradays law
   C. Mutual induction
   D. Law of conservation of power

8. Suri transmission is_________________?

   A. electrical-pneumatic
   B. mechanical-electrical
   C. hydro-mechanical
   D. hydro-pneumatic

9. Transformer coupling can be used in______________amplifiers?

   A. Either power or voltage
   B. Only power
   C. Only voltage
   D. None of the above

10. Transformer coupling provides high efficiency because___________?

    A. Collector voltage is stepped up
    B. resistance is low
    C. collector voltage is stepped down
    D. none of the above