LET: TLE Part 8

This is the Multiples Choice Questions Part 8 of TLE. In preparation for the LET Exam, practice, and familiarize every question we have, it might be included in the actual examination. Good luck.

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TLE Part 8

1. The word electron was derived from the Greek word electron which means ______.

a. to rub

b. to rub

c. amber

d. friction

Answer: b

2. The peak to peak voltage in a 117 Vac outlet is _____.

a. 620V

b. 165.5V

c. 331V

d. 220V

Answer: d

3. Which is a type of modulation where the amplitude of the carriers is change in accordance with demodulating signal?

a. FM

b. PDM

c. A,

d. PCM

Answer: c

4. The actual flow of current is from ______.

a. negative to positive

b. positive to negative

c. Positive to positive

d. negative to negative

Answer: a

5. The rate of doing is called _____.

a. energy

b. power

c. voltage

d. resistance

Answer: d

6. MilliHenry is equal to ______.

a. 10th Henry

b. 100th Henry

c. 1000th Henry

d. 1000000 Henry

Answer: c

7. An inductor opposes any changes in _______.

a. voltage

b. current

c. frequency

d. Modulation

Answer: b

8. A circuit having two or more current paths is ______ connection.

a. Parallel

b. series

c. series-parallel

d. cannot be determined

Answer: a

9. Which is an electrical unit of measuring a power?

a. ohms

b. non linear

c. potentiometer

d. resistance

Answer: c

10. Which is an electrical device that is used to limit or oppose the flow of current in a circuit?

a. linear

b. non linear

c. potentimeter

d. resistance

Answer: a

11. Which is an electronic device that is used to limit or oppose the flow of current in a circuit?

a. capacitor

b. resistor

c. diode

d. inductor

Answer: b

12. An instrument that is used to measure the amount of resistance in circuit is called _____.

a. DC volmeter

b. ohmmeter

c. AC Volmeter

d. Ammeter

Answer: b

13. Solder is a mixture of ______.

a. tin lead

b. zinc and lead

c. zinc and tin

d. copper and lead

Answer: a

14. The commonly used soldering lead is ______.

a. 40-60

b. 60-40

c. 50-50

d. 50-40

Answer: b

15. A standard 220VAC has a frequency of ______.

a. 45Hz

b. 30Hz

c. 50Hz

d. 60Hz

Answer: d

16. A low frequency speaker is sometimes known as ______.

a. tweeter

b. squeaker

c. base collector

d. collector base emitter

Answer: c

17. The three of common transistor are a/an ______.

a. collector bias emitter

b. emitter collector bias

c. base collector

d. collector base emitter

Answer: d

18. Connecting lead from the negative to positive of a battery will produce a/an ______.

a. high resistance circuit

b. low current path

c. short circuit

d. open circuit

Answer: c

19. What is the approximate characteristics voltage that develop across a red LED?

a. 1.7 V

b. 0.6 V

c. 3.4 V

d. 4 V

Answer: c

20. If two resistors are places in series, the final resistance is ______.

a. higher

b. lower

c. the same

d. cannot be determined

Answer: a