CETA EVALUATION MAIN ANSWERS AND
QUESTIONS SET A+
✔✔Lead free type solder for electronics work is made from: - ✔✔Silver and Tin
✔✔Soldering stations used for electronics circuit-board work have historically
been(approximately): - ✔✔30 Watts
✔✔Solder flux mainly: - ✔✔removes oxides on metals to be soldered
✔✔Laminations used for the core of a transformer: - ✔✔must be insulated from each
other
✔✔I=1 amp, R=10,000 ohms. What is the value of the voltage? - ✔✔10,000 volts
✔✔If R=200 ohms and I=.02 amps. What is the value of P(power)? - ✔✔.08 watts
✔✔Which frequency will have a higher loss when using coaxial cable transmission line?
- ✔✔1 Ghz
✔✔What is a reference antenna that all other antennas with gain are compared to? -
✔✔dipole
✔✔A high frequency antenna is than a low frequency one. - ✔✔is shorter
✔✔Standing waves on a transmission cable: - ✔✔can be caused by poor termination
✔✔Sideband frequencies are produced when an radio carrier frequency is: -
✔✔modulated
✔✔Doubling the power in a transmitter output is a: - ✔✔3 db gain
, ✔✔0 db is what level of received TV signal? - ✔✔1000 microVolts
✔✔A byte is: - ✔✔8 bits
✔✔In a 3 input AND gate: - ✔✔3 input must be high for a high output
✔✔An LCD operates by polarizing the light through filters. The fluid rotates the light: -
✔✔90 degrees
✔✔To test an SCR with an ohmmeter. - ✔✔with + to anode and - to cathode, short gate
and anode together
✔✔Using the Rx100 range and testing between the source and drain of an N channel
JFET: - ✔✔readings should be equal in both directions
✔✔With + voltage to drain or source and a - voltage to the gate on an N channel JFET,
internal resistance of the JFET will be: - ✔✔High
✔✔Which is least likely to cause ESD damage to MOSFET - ✔✔flux
✔✔A logic probe: - ✔✔indicates high and low voltage conditions
✔✔In a typical electrical generator a small DC voltage applied to the field windings: -
✔✔is able to control the output level of the generator
✔✔When working with and testing lead acid batteries - ✔✔Always wear eye protection
and never cause a spark
✔✔Audio signals, such as the output from DVD players, satellite receivers and
preamplifers, usually are of what amplitude for input to a TV, modulator or other
equipment? - ✔✔1 voltage peak to peak
✔✔Which of these signal parameters does a spectrum analyzer show? - ✔✔Magnitude
and frequency
✔✔Permanent, non-volatile, non removable data storage in a computer is: - ✔✔ROM
✔✔What should be used first to clean a corroded plated soldering iron tip? - ✔✔flux,
cloth and heating
✔✔When soldering high voltage connections: - ✔✔Leave the terminal with a smooth
and rounded covering of solder
QUESTIONS SET A+
✔✔Lead free type solder for electronics work is made from: - ✔✔Silver and Tin
✔✔Soldering stations used for electronics circuit-board work have historically
been(approximately): - ✔✔30 Watts
✔✔Solder flux mainly: - ✔✔removes oxides on metals to be soldered
✔✔Laminations used for the core of a transformer: - ✔✔must be insulated from each
other
✔✔I=1 amp, R=10,000 ohms. What is the value of the voltage? - ✔✔10,000 volts
✔✔If R=200 ohms and I=.02 amps. What is the value of P(power)? - ✔✔.08 watts
✔✔Which frequency will have a higher loss when using coaxial cable transmission line?
- ✔✔1 Ghz
✔✔What is a reference antenna that all other antennas with gain are compared to? -
✔✔dipole
✔✔A high frequency antenna is than a low frequency one. - ✔✔is shorter
✔✔Standing waves on a transmission cable: - ✔✔can be caused by poor termination
✔✔Sideband frequencies are produced when an radio carrier frequency is: -
✔✔modulated
✔✔Doubling the power in a transmitter output is a: - ✔✔3 db gain
, ✔✔0 db is what level of received TV signal? - ✔✔1000 microVolts
✔✔A byte is: - ✔✔8 bits
✔✔In a 3 input AND gate: - ✔✔3 input must be high for a high output
✔✔An LCD operates by polarizing the light through filters. The fluid rotates the light: -
✔✔90 degrees
✔✔To test an SCR with an ohmmeter. - ✔✔with + to anode and - to cathode, short gate
and anode together
✔✔Using the Rx100 range and testing between the source and drain of an N channel
JFET: - ✔✔readings should be equal in both directions
✔✔With + voltage to drain or source and a - voltage to the gate on an N channel JFET,
internal resistance of the JFET will be: - ✔✔High
✔✔Which is least likely to cause ESD damage to MOSFET - ✔✔flux
✔✔A logic probe: - ✔✔indicates high and low voltage conditions
✔✔In a typical electrical generator a small DC voltage applied to the field windings: -
✔✔is able to control the output level of the generator
✔✔When working with and testing lead acid batteries - ✔✔Always wear eye protection
and never cause a spark
✔✔Audio signals, such as the output from DVD players, satellite receivers and
preamplifers, usually are of what amplitude for input to a TV, modulator or other
equipment? - ✔✔1 voltage peak to peak
✔✔Which of these signal parameters does a spectrum analyzer show? - ✔✔Magnitude
and frequency
✔✔Permanent, non-volatile, non removable data storage in a computer is: - ✔✔ROM
✔✔What should be used first to clean a corroded plated soldering iron tip? - ✔✔flux,
cloth and heating
✔✔When soldering high voltage connections: - ✔✔Leave the terminal with a smooth
and rounded covering of solder
