Detecto 954F Instruction Manual download pdf (Page 16)

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QUIZ

1. The 9V battery supplies a . . .

A. positive AC voltage.

B. DC voltage.

C. AC voltage.

D. rectified DC voltage.

2. A human’s maximum thermal radiation is between . . .

A. 3 and 5µm.

B. 9 and 13µm.

C. 10 and 20µm.

D. 9 and 10µm.

3. As temperature changes, the pyroelectric crystals generate . . .

A. white light.

B. infrared light.

C. heat.

D. a voltage.

4. A wavelength is the distance between two points having . . .

A. opposite phases.

B. two different phases.

C. the same phase, but different voltages.

D. the same phase and voltage.

5. Infrared can be thought of as heat radiation because the . . .

A. electrical energy is transformed into heat.

B. radiant energy is transformed into heat.

C. mechanical energy is transformed into heat.

D. solar energy is transformed into heat.

6. What are the two inputs called in an op-amp?

A. non-inverting and inverting.

B. V

1 and V2.

C. V

EE and VCC.

D. gates.

7. A high pass filter attenuates all signals . . .

A. between two frequencies.

B. below the critical frequency.

C. above the critical frequency.

D. with high amplitudes.

8. The formula for the closed loop gain is . . .

A. (R2 x R1)Vo

B. (R1/R2)Vi

C. (R2/R1)Vo

D. -(R2/R1)Vi

9. A low pass filter attenuates all signals . . .

A. between two frequencies.

B. below the critical frequency.

C. above the critical frequency.

D. with low amplitudes.

10. A filter with a high value in Q has a . . .

A. wide bandwidth.

B. narrow bandwidth.

C. long bandwidth.

D. attenuates less frequencies.

Answers: 1. B, 2. D, 3. D, 4. D, 5. B, 6. A, 7. B, 8. D, 9. C, 10. B

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Detecto 954F Instruction Manual Page 16

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