Transient and frequency response of D’ Arsonval Galvanometer 
1. In ballistic galvanometer, the frame on which the coil is wound is non-metallic. It is ____
2. A null type of instrument as compared to a deflection type instrument has ______
3. In a second order system, the peak overshoot is 100 %. The value of damping factor is :
4. The sensitivity of a moving coil galvanometer can be increased by decreasing ____
5. The deflection θ is related to the electric current I in a galvanometer by the relation
6. What is the shape of the magnet, used in D’Arsonval galvanometer when a large flux is required in the air gap ?
7. Phosphor- bronze wire is used in suspension because it has _____
8. A moving coil instrument has the following data.
Number of turns = 100, width of the coil = 20 mm, depth of the coil = 30 mm, flux density in the gap = 0.1 Wb/m2. Calculate the deflecting torque when carrying a current of 10 mA.
Number of turns = 100, width of the coil = 20 mm, depth of the coil = 30 mm, flux density in the gap = 0.1 Wb/m2. Calculate the deflecting torque when carrying a current of 10 mA.
9. A moving coil instrument has the following data.
No. of turns = 100, width of the coil = 20 mm, depth of the coil = 30 mm, flux density in the gap = 0.1 Wb/m2, the deflection torque = 30 × 10–6 Nm. Calculate the current through the moving coil.
No. of turns = 100, width of the coil = 20 mm, depth of the coil = 30 mm, flux density in the gap = 0.1 Wb/m2, the deflection torque = 30 × 10–6 Nm. Calculate the current through the moving coil.
10. In measurement systems, which of the following static characteristics are desirable ?