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1. What is a nucleonic sensing method employing usually one or ore radioisotope sources and radiation detectors?
A. Radiation sensing
B. Sonic level Sensing
C. Conductivity level sensing
D. Dielectric variation sensing
2. What is concerned with the measurement of electric signals on the scalp with arise from the underlying neural activity in the brain (including synaptic sources)?
A. ECG
B. EEG
C. Ultrasound
D. EKG
3. In therapeutic radiology and in nuclear medicine, the energies of interest range from about
A. 10 to 100 KeV
B. 100 to 10000 KeV
C. 10000 to 10000 KeV
D. 1 to 10 KeV
4. which of the following is a four-layer diode with an anode gate and a cathode gate?
A. SCS
B. SCR
C. SBS
D. SUS
5. What is basically a two-terminal parallel-inverse combination of semiconductor lawyers that permits triggering in either direction?
A. Diac
B. Triac
C. Quadrac
D. Shockley Diode
6. What is the typical value of the interbase resistance of UJTs?
A. 20 K𝛺
B. Between 4 to 10 K𝛺
C. 4 K𝛺
D. Between 4 to 10 K𝛺
7. PUT stand for
A. programmable Unijuction Transistor
B. Programmable Universal Transistor
C. Pulse Unijuction Transistor
D. Pulse Universal Transistor
8. Which Transistor conducts current in both directions when turned on?
A. Diac
B. SCR
C. Quadrac
D. SCS
9. What is a three terminal device used to control large current to a load?
A. SCR
B. SCS
C. GTO
D. Thyristor
10. What is the other term for thermoelectric effect?
A. Seebeck effect
B. Hall effect
C. Photoelectric effect
D. Thermal effect
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