CETA / AST PRACTICE QUESTIONS & ANSWERS |VERIFIED

CETA / AST PRACTICE QUESTIONS & ANSWERS |VERIFIED 8.33 meters is the full wavelength in the air for what RF frequency? A. 72 MHz B. 83.3 MHz C. 36 MHz D. 16.66 - ANSWER C. 36 MHz Decimal 164 would appear as __________ in binary? A. B. C. D. - ANSWER B. A resistor has color stripes yellow, violet, violet, silver. It is: A. 46 MegOhm +/- 10% B. 470 MegOhm +/- 10% C. 37 MegOhm +/- 10% D. 48 kOhm +/- 5% - ANSWER B. 470 MegOhm +/- 10% Capacitors of 100pf, 100pf and 50pf connected in a series total for the circuit? A. 25 uf B. 250 uf C. 25 pf D. 250 pf - ANSWER C. 25 pf What is the ripple frequency of a full-wave single phase bridge rectifier operated at 60Hz? A. 180 Hz B. 90 Hz C. 360 Hz D. 120 Hz - ANSWER D. 120 Hz When heated or cooled, a __________ emits a voltage. A. Thermocouple B. Therometer C. Thermostat D. Thermocline - ANSWER A. Thermocouple Which wire size is physically largest? A. #8 B. #12 C. #16 D. #24 - ANSWER A. #8 Adding the binary numbers 101011 and 001110 will give you what result? A. 111001 B. 111111 C. 001010 D. 111011 - ANSWER A. 111001 A component that reduces in resistance as it is heated: A. Is a negative temperature coefficient thermistor B. Is a positive temperature coefficient thermistor C. Is a varactor D. Is a thermocouple - ANSWER A. Is a negative temperature coefficient thermistor An autotransformer: A. Has the secondary unattached to the primary B. Has a single winding C. Uses a core winding D. Uses a buck-boost coil - ANSWER B. Has a single winding A dual trace oscilloscope differs from a single trace in that only the dual trace scope: A. Has two cathode ray guns B. Has Z input C. Alternates sweeps D. Has intensified traces - ANSWER C. Alternates sweeps If an RF signal voltage is reduced by 6 dB, it is then: A. 25% less B. Half the original size C. 75% less D. Not the changed in voltage level - ANSWER B. Half the original size Applying positive voltage to the P end of an ordinary germanium diode: A. Will forward bias it B. Will reverse bias it C. Probably will damage it D. Should have no effect on it - ANSWER A. Will forward bias it