T4C Meters and their placement in circuits,
including volt, amp,
multi,
peak-reading and RF watt; ratings of fuses and switches
T4C01
@T4B01
How is
a voltmeter usually connected to a circuit under test?
A. In series with the circuit
B. In parallel with the circuit
C. In quadrature with the circuit
D. In phase with the circuit
T4C02
@T4B02
How is
an ammeter usually connected to a circuit under test?
A. In series with the circuit
B. In parallel with the circuit
C. In quadrature with the circuit
D. In phase with the circuit
T4C03
@T4B03
Where
should an RF wattmeter be connected for the most accurate
readings
of transmitter output power?
A. At the transmitter output connector
B. At the antenna feed point
C. One-half wavelength from the transmitter
output
D. One-half wavelength from the antenna feed
point
T4C04
@T4B07
For
which measurements would you normally use a multimeter?
A. SWR and power
B. Resistance, capacitance and inductance
C. Resistance and reactance
D. Voltage, current and resistance
T4C05
@T4B08
What
might happen if you switch a multimeter to measure resistance
while
you have it connected to measure voltage?
A. The multimeter would read half the actual
voltage
B. It would probably destroy the meter
circuitry
C. The multimeter would read twice the actual
voltage
D. Nothing unusual would happen; the multimeter
would measure the
circuit's
resistance
T4C06
@T4B09
If you
switch a multimeter to read microamps and connect it into a
circuit
drawing 5 amps, what might happen?
A. The multimeter would read half the actual
current
B. The multimeter would read twice the actual
current
C. It would probably destroy the meter
circuitry
D. The multimeter would read a very small value
of current
T4C07
@T4B10
At what
line impedance do most RF watt meters usually operate?
A. 25 ohms
B. 50 ohms
C. 100 ohms
D. 300 ohms
T4C08
@T4B11
What
does a directional wattmeter measure?
A. Forward and reflected power
B. The directional pattern of an antenna
C. The energy used by a transmitter
D. Thermal heating in a load resistor
T4C09
@T4B12
If a
directional RF wattmeter reads 90 watts forward power and 10
watts
reflected power, what is the actual transmitter output power?
A. 10 watts
B. 80 watts
C. 90 watts
D. 100 watts
T4C10
@T4B14
Why
might you use a peak-reading RF wattmeter at your station?
A. To make sure your transmitter's output power
is not higher than
that
authorized by your license class
B. To make sure your transmitter is not drawing
too much power from
the AC
line
C. To make sure all your transmitter's power is
being radiated by
your
antenna
D. To measure transmitter input and output
power at the same time
T4C11
@T4B15
What
could happen to your transceiver if you replace its blown 5 amp
AC line
fuse with a 30 amp fuse?
A. The 30-amp fuse would better protect your
transceiver from using
too
much current
B. The transceiver would run cooler
C. The transceiver could use more current than
5 amps and a fire
could
occur
D. The transceiver would not be able to produce
as much RF output