Surprise Quiz 1 - Elements of Instrumentation

The Permanent Magnet Moving Coil Instruments are only most accurate in type of measurement.

• AC

• DC

• AC & DC

• Electromagnetic

_______ is the working principle of null type measuring instrument.

• Seebeck Effect

• Magnetic

• D'Arsonval

• Flemings rule

________ instrument makes use of dial and pointer for showing or indicating the magnitude of unknown quantity.

• Indicating

• Recording

• Integrating

• Differential

In which of the following instruments both the AC measurement can be done

• D'Arsonval meter

• Moving Coil

• Induction Type

• Moving iron

_____ is sensed using the hall sensor with the principle of hall effect.

• Temperature

• Moisture

• Magnetic Field

• Current

The force which is produced which is equal and opposite to the deflecting force at the final steady position is known as _______ force.

• Deflecting

• Controlling

• Damping

• Operating

In AC ammeter the ________ effect is used as the operating principle to deflect the pointer of the meter.

• Electromagnetic

• Electrostatic

• Thermal

• Magnetic

The instrument is used as DC Voltmeter for power measurement by little modification_______

• PMMC

• PMMI

• Potentiometer

• Electrodynamometer

The operating force which deflects the pointer from zero position in an instrument is known as ___________.

• null force

• deflection force

• controlling force

• damping force

__________ system is used to prevent oscillation in moving system

• Oscillatory

• Controlling

• Damping

• Deflection