5
1-29. Which of the following is a typical use
for a megger?
1. Testing MOSFETs
2. Testing filter capacitors
3. Testing thermistor mounts
4. Testing an ac power cord for
insulation breakdown
1-30. When large capacitors are stored as spare
parts, why should their terminals be
shorted with a piece of wire?
1. It prevents dielectric leakage
2. It prevents deterioration of the plates
3. It prevents the capacitors from
becoming charged when in close
proximity to an rf field
4. It prevents electrolytic capacitors
from changing value during periods
of storage
1-31. Capacitance meters can be grouped into
which of the following basic categories?
1. Wheatstone type and Kelvin Varley
type
2. Bridge-type and reactance-type
3. Depletion-type and enhancement-
type
4. Resistive-type and reactive-type
1-32. Which of the following statements
correctly describes the accuracy and use
of a reactance-type capacitance meter?
1. It gives approximate values and is
usually portable
2. It gives approximate values and is
used in calibration laboratories only
3. It is very accurate and is usually
portable
4. It is very accurate and is used to
measure capacitors that have a high
power factor
1-33. Which of the following types of inductor
core materials produces the greatest
inductance?
1. Mica
2. Magnetic metal
3. Polyparoloxylene
4. Nonmagnetic metal
1-34. As frequency increases, the inherent
resistance of the inductor causes which
of the following types of losses to
become more critical?
1. Hysteresis
2. Skin effect
3. Eddy currents
4. Standing waves
1-35. Most capacitance test sets are capable of
testing capacitors and what other type of
component?
1. TRIACS
2. Inductors
3. Resistors
4. Barretters
1-36. When using reactance-type test
equipment to measure inductance, what
relationship exists between the inductor
and the voltage drop across the reactance
of the inductor?
1. The voltage drop is directly
proportional to the value of
inductance
2. The voltage drop is inversely
proportional to the value of
inductance
3. The voltage drop is proportional to
the dielectric constant (K) of the
inductor
4. The voltage drop is inversely
proportional to the frequency of the
applied voltage
.
