Latest TLE Reviewer 15

1. A diode is an electronic part that is expected to do one of the following functions all times. Which one?

A. Allow current to flow in both directions

B. Multiply voltage

C. Allow current to flow in one directions only

D. Do not allow current flow

ANS: C

2. There are four types of diodes. The diode that acts as a regular is the _______________ diode.

A. silicon

B. crystal

C. lightning

D. zener

ANS: D

3. You will find an electrode nearest the white band on a rectifier. What is it?

A. anode

B. cathode

C. gate

D. Main terminal

ANS: B

4. When a diode is tested and the reading is zero, it means that the diode is _____ .

A. shorted

B.  open

C. leaky

D. good

ANS: A

5. If the transistor is an NPN type the base is _______ .

A. negative and positive

B. negative

C. positive

D. common

ANS: C

6. If the arrow of the transistor is pointing inward it tells us the transistor is ______ .

A. NPN

B. PNP

C. bipolar

D. injunction

ANS: B

7. In the electronic sysmbol of a transistor,the electrode with an arrow is the ________ .

A. emitter

B. base

C. collector

D. cathode

ANS: A

8. The production of magnetic field by current in a conductor is called _______ .

A. electromagnetism

B. ferromagnetic

C.magnetic

D. diagmagnetic

ANS: A

9. The type of current which the amplitude drops to zero periodically and is produced in rectifier is known as ________ .

A. Pulsating direct current

B. damped alternating current

C. varying direct current

D. saw tooth wave

ANS: A

10. Printed on the dial of an Am radio is an RF band covering _______.

A. kHz 76-90 Mhz

B. 88-108 Mhz

C. 16Hz-20 kHz

D. 535-1605 kHZ

ANS: D

11. An ordinary radio can be tuned in different stations. The electronic component  responsible for this function is the _______ .

A. tuning capacitor

B. oscillator

C. IF transforms

D. detector diode

ANS: A

12. The condition of a loud speaker is tested more accurately using one of the range listed below. Which one?

A. Rx1K

B. Rx10

C. Rx1

D. Rx10K

ANS: A

13. Working efficient is a good work habit. Tinning the tip of soldering iron refers to _____ .

A. cleaning the tip with a sand paper

B. making the tip pointed

C. cutting the tip

D. applying flux the tip

ANS: A

14. The common cause of erratic or distorted sound of a transistor radio is a defective _______ .

A. amplifier

B. volumn control

C. antenna

D. tuner

ANS: B

15. An appliances with 110V Ac supply is accidentally plugged  to 220V Ac outlet. What component is usually destroyed?

A. switch

B. Ac plug

C. Line fuse

D. Power transformer

ANS: C

16. Which form of electricity has current flow always in the same direction?

A. Voltage

B. Power

C. Alternating current

D. direct current

ANS: D

17. The form of electricity has currently flow always in the same direction?

A. power

B. resistance

C. electromagnetism

D. frequency

ANS: B

18. Which part of an electrical circuit converts electrical energy into another form of energy to do work?

A. load

B. circuit

C. source

D. control

ANS: A

19. A law that states that the current is directly proportional to voltage and inversely proportional to resistance is known as ___________ .

A. PEC

B. Law of resistivity

C. Kirchoff’s law

D. Ohm’s law

ANS: D

20. Circuit breakers are used to protect house hold electrical circuits. What is the capacity rating of the breaker used for convenience outlets of general purpose circuits?

A. 20 Amperes

B. 30 Amperes

C. 15 Amperes

D. 60 Amperes

ANS: A
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