Q.1
Galvanometer constant G
  • c/BAn
  • BAn/c
Q.2
Resistances can be measured with the help of:
  • Wattmeters
  • Voltmeters
  • Ammeters
  • Ohmmeters and resistance bridges
  • All of the above
Q.3
Damping of the Ballistic galvanometer is made small to:
  • Make the system critically damped
  • Get minimum overshoot
  • Get first deflection large
  • Make the system oscillatory
Q.4
For protecting a galvanometer during transport:
  • A capacitor is connected across the terminals
  • Critical damping resistance is connected across the terminals
  • The terminals are kept open circuited
  • The terminals are kept shorted
Q.5
Most sensitive galvanometer is:
  • Elastic galvanometer
  • Vibration galvanometer
  • Dubble galvanometer
  • Spot ballistic galvanometer
Q.6
In a moving coil galvanometer, the deflection of the coil Φ is related to the electric current i by the relation
  • I ∝ tanΦ
  • I ∝ Φ
  • I ∝ Φ2
  • I ∝ tan2Φ
Q.7
The sensitivity of a moving coil galvanometer can be increased by decreasing
  • the number of turns in the coil
  • the area of the coil
  • the magnetic field
  • the restoring torque per unit twist of the suspension
Q.8
A galvanometer ofΩ gives full scale deflection with 2mA current. To convert it into ammeter, the range ofA is connected with it. What is the required value of shunt?
  • 0.1 Ω
  • 0.2 Ω
  • 0.01 Ω
  • 0.02 Ω
0 h : 0 m : 1 s