Transient and frequency response of D’ Arsonval Galvanometer 
1. An instrument detects the presence of electric current in the circuit, is known as,
2. In a D’Arsonval galvanometer what is the purpose of using iron core between two pole faces ?
3. Which is the most common absolute instrument that gives the measured current in form of the tangent of deflected angle ?
4. Galvanometer connected with high resistance in series is used as ___
5. Sometimes D’Arsonval galvanometer does not use ferromagnetic cores between the poles of permanent magnet, in this case,
6. How does a galvanometer become an ammeter ?
7. Which one of the following meters is an integrating type instrument?
8. The advantage of using galvanometers is ___________?
9. 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 deflection when carrying a current of 10 mA and the control spring constant is 2 × 10–6 Nm/degree.
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 deflection when carrying a current of 10 mA and the control spring constant is 2 × 10–6 Nm/degree.
10. The advantage of PMMC type instruments is _______