Measurement And Instrumentation in General Science : Practice MCQ Questions & Answers with Explanations

In an Anderson bridge, the unknown inductance is measured in terms of

In an AC. co-ordinate potentiometer, the currents in the phase and quadrature potentiometer are adjusted to be

In a Weston synchronoscope, the fixed coils are connected across

In a Weston frequency meter, the magnetic axes of the two fixed coils are

In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of

In a single phase power factor meter the phase difference between the currents in the two pressure coils is

In a Schering bridge the potential of the detector above earth potential is

In a portable instrument, the controlling torque is provided by

In a meggar controlling torque is provided by

In a low power factor wattmeter the pressure coil is connected

In a low power factor wattmeter the compensating coil is connected

In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at

In a 3-phase power measurement by two wattmeter method, both the watt meters had identical readings. The power factor of the load was

In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be

If the current in a capacitor leads the voltage by 80°, the loss angle of the capacitor is

If an instrument has cramped scale for larger values, then it follows

If an inductance is connected in one arm of bridge and resistances in the remaining three arms

For measuring current at high frequency we should use

For measuring a very high resistance we should use

For measurements on high voltage capacitors, the suitable bridge is