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Questions Bank (1263888 total)

Which of the following are often embedded in the windings of an electric motor to monitor winding temperature? KE7.3

Varistors

Thermistors

Potentiometers

Rheostats

The resistor type most suitable for precision applications where long-term stability is required is the:

wire wound resistor

metal film resistor

carbon film resistor

Hata yoktur

The resistor type most suitable for high power applications is the:

wire wound resistor

metal film resistor

carbon film resistor

Primary cells, secondary cells and fuel cells produce electric current when:

physical pressure is applied to the cell plates

a magnetic field cuts through the cell plates

heat is applied to the cell plates

a chemical reaction occurs inside the cell

An EMF is produced by a thermocouple by:

physical pressure being applied to the end of the thermocouple

a chemical reaction occurring inside the thermocouple

a magnetic field cutting through the thermocouple

heat being applied to the end of the thermocouple

A piezoelectric device produces an EMF when exposed to:

heat

light

pressure

sound

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