Question: A circuit of 2 µ A is passed through the moving coil of an undamped d’Arsonval galvanometer which has a displacement constant of 2 Nm/A and a control constant of 10 ×10<sup>-6 </sup>Nm/rad. The moving oscillates with an amplitude of :
Answer:
MCQ: A circuit of 2 µ A is passed through the moving coil of an undamped d’Arsonval galvanometer which has a displacement constant of 2 Nm/A and a control constant of 10 ×10<sup>-6 </sup>Nm/rad. The moving oscillates with an amplitude of :
Correct Answer:
A. 0.2 rad
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Related Questions
- 1. If the damping in the d’Arsonval galvanometer is only due to electromagnetic effects,the resistance required for critical damping is _________Where G = displacement constant ; Nm/A, K = control constant ; Nm/rad and J = inertia constant ; kg-m<sup>2</sup>.
- 2. A d’arsonval galvanometer uses a lamp and scale arrangement. Its current sensitivity is 250 mm/µ if the resistance of the coil is 100 Ω. And the external resistance required for critical damping is 900 Ω (which is connected in the circuit), the voltage sensitivity is
- 3. Ayrton shunt is used in d’Arsonval galvanometers so as to limit the current in the galvanometer coil to its maximum permissible value. The relative value of current through the galvanometer coil and the shunt
- 4. A ballistic galvanometer should be designed with
- 5. In a flux meter
- 6. In an unshunted flux meter,the sensitivity is dependent upon
- 7. A vibration galvanometer is to be turned to a frequency of 50 Hz. The ratio of its control constant to inertia constant should be
- 8. A vibration galvanometer is tuned
- 9. A Duddell’s oscillograph can be used for frequencies
- 10. A Duddell’s oscillograph will give no amplitude distortion and phase displacement if its
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