Galvanometer is a very sensitive device with______________________?

Related Mcqs:

1. A sensitive galvanometer gives full-scale deflection with 100 mV. If the resistance of the galvanometer is 50? the maximum current that can flow through safely is__________________?

   A. 2.0 mA B. 20 mA C. 200 mA D. 0.2 mA...

2. The deflection for 50 division of galvanometer is decreased to 25 divisions by shunt resistance of 12Ω. Galvanometer resistance is_____________?

   A. 18Ω B. 30Ω C. 24Ω D. 12Ω...

3. When the coil of the galvanometer is in equilibrium then the deflecting couple is____________________?

   A. zero B. equal to the restoring couple C. greater than the restoring couple D. smaller than the restoring couple...

4. Coil of a galvanometer is suspended in a radial magnetic field so that the deflecting torque on the coil is always___________________?

   A. BINA cosa B. BINA sina C. BINA tana D. BINA...

5. A galvanometer basically is an instrument used to ____________________?

   A. detect current in a circuit B. measure current flowing through a circuit C. measure voltage across a circuit D. measure potential difference between two points in a circuit...

6. A moving coil galvanometer of resistance 100? gives half scale deflection for a current of 20mA. What will be the potential difference across it ?

   A. 4 volt B. 5 volt C. 2 volt D. 0.4 volt...

7. The sensitivity of a galvanometer is given by__________________?

   A. C/BAN B. CAN/B C. BAN/C D. ABC/N...

8. The effective way to increase the sensitivity of a moving coil galvanometer is to___________________?

   A. use a very long and fine suspension B. use a coil of very large area C. use a coil with very large number of turns D. use a very strong magnetic field...

9. The normal ear is the most sensitive in the frequency range___________________?

   A. 20000 to 30000 hertz B. 10 to 20 hertz C. 2000 to 4000 hertz D. 6000 to 8000 hertz...

10. The device used for conversion of D.C. to A.C. is called______________?

    A. Converter B. A rectifier C. Inverter D. Oscillator...