Pop Quiz Topic 1 & 2

These are the elements of measurement system, EXCEPT

• Primary Sensing

• Data Presentation

• Error Sensing

• Variable Manupulation

"Error is defined as the difference or deviation between the measured value and the expected value (actual value) of the measured parameter."

Identify THREE (3) types of common errors encountered in the measurement.

• Random Error

• Gross Error

• Calculation Error

• Systematic Error

Give the formula for R2

D'Arsonval instrument with internal resistance of 100Ω and full scale deflection surrent of 5mA is to be used in the design of three range volmeter of 10V, 20V and 50V. Identify the value of R2.

• 1.9KΩ

• 2KΩ

• 4KΩ

• 6KΩ

Identify the multiplier resistor for DC voltmeter with sensitivity of 1KΩ/V, Rm=1KΩ and range 0-15V.

• 1.4KΩ

• 14KΩ

• 140Ω

• 14Ω

Which of the following errors is the systematic errors

• Absolute Error

• Environmental Error

• Gross Error

• Relative Error

Determine which of the following is the formula for Relative error

Identify the torques that operate in the Permanent Magnet Moving Coil (PMMC) instrument.

• Deflecting, controlling and hydraulic torques

• Deflecting, damping and hydraulic torques

• Deflecting, controlling and damping torques

• Deflecting, hydraulic and controlling torques

Calculate the percentage of error if the expected value of the voltage across a resistor is 4.5V. While the measurement yields a value of 4.3 V.

• 0.2%

• 4.65%

• 4.54%

• 4.44%

The standard resistor, capacitor, inductor which usually found in an electronics laboratory are classified as

• Working Standard

• Primary Standard

• Secondary Standard

• international Standard