Latest TLE Reviewer 17

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

A. to rub

B.  to rub

C. amber

D. friction

ANS: B

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

A. 620 V

B. 165.5V

C. 331V

D. 220V

ANS: 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

ANS: C

4. The actual flow of current is form ______ .

A. negative to positive

B. positive to negative

C. positive to positive

D. negative to negative

ANS: A

5. The rate of doing work is called ________ .

A. energy

B. power

C. voltage

D. resistance

ANS: D

6. MilliHenry is equal to _______.

A. 10^th Henry

B. 100^th Hnery

C. 1000^th Henry

D. 1000000^th Henry

ANS: C

7. An inductor opposes any changes in ______________ .

A. voltage

B. current

C. frequency

D. modulation

ANS: B

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

A. parallel

B. series

C. series-parallel

D. cannot be determined

ANS: A

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

A. ohms

B. non linear

C. potentiometer

D. resisitance

ANS: C

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

A. linear

B. non linear

C. potentiometer

D. resistance

ANS: 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

ANS: B

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

A. DC voltmeter

B. ohmmeter

C. AC volmeter

D. ammeter

ANS: B

13. Solder is a mixture of _______ .

A. tin lead

B. zinc and lead

C. zinc and tin

D. copper and lead

ANS: A

14. The commonly used soldering lead is ________ .

A. 40-60

B. 60-40

C. 50-50

D. 50-40

ANS: B

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

A. 45Hz

B. 30Hz

C. 50Hz

D. 60Hz

ANS: D

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

A. tweeter

B. squeaker

C. base collector

D. collector base emitter

ANS: C

17. The three leads of common transistor are a/an ________ .

A. collector bias emitter

B. emitter collector bias

C. base collector

D. collector base emitter

ANS: D

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

A. high resistance circuit

B. low current path

C. short circuit

D. open circuit

ANS: 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. 6V

ANS: C

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

A. higher

B. lower

C. the same

D. cannot be determined

ANS: A

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