Chapter 4 · MCQ Read Mode

Electrical Measurements and Instrumentations

A static error in measurement occurs when:

A systematic error is characterized by being:

Random (accidental) errors can best be reduced by:

A dynamic error arises specifically when:

The Maxwell (Maxwell-Wien) bridge is primarily used to measure:

A key advantage of the Maxwell bridge for measuring medium-Q inductors is that:

The Schering bridge is primarily used to measure:

The Wien bridge is notably used for:

At balance, the Wien bridge must simultaneously satisfy:

A gross error in measurement is typically caused by:

In a PMMC instrument, deflection is proportional to:

A moving iron instrument's deflection is proportional to:

An ammeter is connected in a circuit:

A voltmeter is connected in a circuit:

A wattmeter's deflection is proportional to:

A watt-hour (energy) meter differs from a wattmeter in that it measures:

A maximum demand meter is used to record:

The Kelvin double bridge is specifically designed for measuring:

A Megger (insulation resistance tester) is used to measure:

A galvanometer is primarily used as:

A potentiometer transducer produces an output that varies with:

An LVDT measures displacement by sensing:

The resistance of a strain gauge changes primarily due to:

A load cell typically uses which sensing element to measure force/weight?

The Hall Effect sensor generates a voltage that is:

A piezoelectric sensor generates an electrical output in response to:

A thermocouple generates a voltage based on which physical principle?

A key advantage of a thermocouple over a thermistor is:

A photoconductive cell (LDR)'s resistance:

A capacitive sensor detects changes based on variations in:

A weighted resistor D/A converter uses resistors that are:

A key drawback of the weighted resistor D/A converter is:

The R-2R ladder D/A converter's main advantage over the weighted resistor type is:

A dual-ramp (dual-slope) A/D converter determines the input voltage by:

A key advantage of the dual-ramp A/D converter is:

A successive approximation (SAR) A/D converter operates by:

Compared to the dual-ramp type, the successive approximation A/D converter generally offers:

Digital multimeters commonly use which A/D converter type, valuing accuracy over speed?

In an R-2R ladder D/A converter, the network structure primarily consists of:

The successive approximation A/D converter's internal comparator is used to:

A key advantage of digital instrumentation over analog instrumentation is:

A typical digital instrumentation system chain begins with:

GPIB (IEEE-488) is specifically designed for:

RS-232 is best described as:

Compared to RS-232, USB interfacing generally offers:

Ethernet/LAN interfacing for instruments primarily enables:

A microprocessor-based instrument can typically perform which additional function compared to a purely analog instrument?

Signal conditioning in a digital instrumentation chain typically includes:

A key benefit of microprocessor-based instrumentation is:

Which interface is a legacy but still-recognized standard specifically associated with connecting test and measurement instruments?

A Current Transformer's primary winding is connected:

A critical safety rule for Current Transformers is that the secondary must:

If a CT's secondary is accidentally left open while the primary carries current, the result is:

A measuring (metering) CT is specifically designed to:

A protection CT is specifically designed to:

The standard secondary current rating for most Current Transformers is:

A Potential Transformer's primary winding is connected:

A key safety consideration for Potential Transformers is that the secondary should never be:

The standard secondary voltage rating for most Potential Transformers is:

Compared to CTs, Potential Transformers are constructed essentially like: