"Basic Electronics"
Basic Electronics Objective Questions from Measurements Instrumentation [1] A CRO can display (a) AC signals (b) DC signals (c) Both AC and DC signals (d) Time invariant signals Ans: C Answer [2] The internal resistance of an ammeter should be (a) Very small (b) medium (c) High (d) Infinity Ans: A Answer [3] A galvanometer has (a) air friction damping (b) fluid friction damping (c) Spring coil damping (d) Eddy current damping Ans:D Answer [4] Electrostatic instruments are normally used for (a) Low current measurements (b) High current measurements (c) Low voltage measurements (d) High voltage measurements Ans:D Answer [5] In a moving coil instrument, the deflecting torque is proportional to (a) Current (b) Square of the current (c) Squareroot of the current (d) sine of the measurand Ans:A Answer [6] The absolute measurement of resistance is done by (a) Ohm's law method (b) Bridge Method (c) Rayleigh method (d) Lorenz method Ans: D Answer [7