What is piezoelectricity?

1. A The ability of materials to generate electromagnetic waves of a certain frequency when voltage is applied
2. B A characteristic of materials that have an index of refraction which depends on the polarization of the electromagnetic wave passing through it
3. C A characteristic of materials that generate a voltage when stressed and that flex when a voltage is applied
4. D The ability of materials to generate voltage when an electromagnetic wave of a certain frequency is applied

What is the equivalent circuit of a quartz crystal?

1. A Series RLC in parallel with a shunt C representing electrode and stray capacitance
2. B Parallel RLC, where C is the parallel combination of resonance capacitance of the crystal and electrode and stray capacitance
3. C Series RLC, where C is the parallel combination of resonance capacitance of the crystal and electrode and stray capacitance
4. D Parallel RLC, where C is the series combination of resonance capacitance of the crystal and electrode and stray capacitance

Which of the following is an aspect of the piezoelectric effect?

1. A Mechanical deformation of material due to the application of a voltage
2. B Mechanical deformation of material due to the application of a magnetic field
3. C Generation of electrical energy in the presence of light
4. D Increased conductivity in the presence of light

Why are cores of inductors and transformers sometimes constructed of thin layers?

1. A To simplify assembly during manufacturing
2. B To reduce power loss from eddy currents in the core
3. C To increase the cutoff frequency by reducing capacitance
4. D To save cost by reducing the amount of magnetic material

How do ferrite and powdered iron compare for use in an inductor core?

1. A Ferrite cores generally have lower initial permeability
2. B Ferrite cores generally have better temperature stability
3. C Ferrite cores generally require fewer turns to produce a given inductance value
4. D Ferrite cores are easier to use with surface-mount technology

What core material property determines the inductance of an inductor?

1. A Permittivity
2. B Resistance
3. C Reactivity
4. D Permeability

Which of the following materials has the highest temperature stability of its magnetic characteristics?

1. A Brass
2. B Powdered iron
3. C Ferrite
4. D Aluminum

What devices are commonly used as VHF and UHF parasitic suppressors at the input and output terminals of a transistor HF amplifier?

1. A Electrolytic capacitors
2. B Butterworth filters
3. C Ferrite beads
4. D Steel-core toroids

What is a primary advantage of using a toroidal core instead of a solenoidal core in an inductor?

1. A Toroidal cores confine most of the magnetic field within the core material
2. B Toroidal cores make it easier to couple the magnetic energy into other components
3. C Toroidal cores exhibit greater hysteresis
4. D Toroidal cores have lower Q characteristics

Which type of core material decreases inductance when inserted into a coil?

1. A Ceramic
2. B Brass
3. C Ferrite
4. D Aluminum

What causes inductor saturation?

1. A Operation at too high a frequency
2. B Selecting a core with low permeability
3. C Operation at excessive magnetic flux
4. D Selecting a core with excessive permittivity