Latest TLE Reviewer 21

1. What types of switch is used to control alternately three-phase line system using two sources of power?

A. double pole single throw switch

B. singles pole double throw switch

C. triple pole single throw switched

D. triple pole double throw switch

Ans: D

2. Which of the following is the best conductor of electricity?

A. copper

B. aluminum

C. silver

D. gold

 Ans:  C

3. What type of switch when you want to control one lamp or group of lamps in two different locations?

A. two, 3-way switch

B. One, 4-way switch

C. two, single switch

D. duplex switch

Ans:  A

4. Cells are connected in parallel to increase the _______ capacity of the cells.

A. current

B. voltage

C. resisitance

D. Inductance

Ans: A

5. The resistors are to be connected in four possible types of circuit connections namely series, parallel, series parallel and parallel-series. Which type of connection will give the least amount of equivalent resistance?

A. series

B. parallel

C. series-parallel

D. parallel

Ans:  B

6. Which is an exposed wiring method that uses cleats, knobs, tubes and flexible tubing for the protection and support of single insulated conductor run in or on  building and not concealed by the building structure?

A. Open wiring on insulators

B. Armored cable wiring

C. Concealed knob and tube wiring

D. Metal clad cable wiring

Ans: A

7. What will happen if two 100-W, 230 V incandescent lamps are connected in series across a 230 V sources?

A. both lamps

B. both lamps will get burnt

C. each lamp will give lesser output lights

D. each lamp will give more output lights

Ans: C

8. What is the mean why electrical appliances  are connected in parallel rather than in series?

A. parallel connection consumes lesser power

B. parallel connection is simpler

C. each appliance consumes more power if connected in series

D. it makes the operation of each appliance independent of each other

ANS: D

9. When replacing a busted fuse which of the following is important?

A. same size and type

B. same type but different rating

C. same size but different rating

D. different size and type

ANS: A

10. Which of the following is a source of alternating  current?

A. dynamo

B. battery

C. Dry cell

D. Alternator

ANS: D

11. When there is a break in the circuit and the current could not pass through the circuit is ________ .

A. Closed

B. shorted

C. grounded

D. alternator

ANS: D

12. Which term usually refers to a device that produces an electric current when light falls upon them?

A. solar cell

B. dry cell

C. solar lamp

D. solar light

ANS: A

13. Which is a synchronous alternating-current machine that changes mechanical power into electrical power?

A. dynamo

B. Motor

C. Alternator

D. Lathe machine

ANS: C

14. Which battery CANNOT be recharge after its chemical energy has been depleted?

A. energizer

B. eveready

C. Primary battery

D. secondary battery

ANS: C

15. Which generates direct current?

A. alternator

B. Dynamo

C. Battery

D. Adaptor

ANS: B

16. Which battery can be recharged after each chemical energy has been depleted.

A. primary battery

B. energizer

C. EverReady

D. Secondary battery

ANS: D

17. Which is used to change mechanical energy into electrical energy?

A. battery

B. circuit

C. Dry cells

D. generator

ANS: D

18. A process in splitting the atom of uranium is called _____.

A. fusion

B. fission

C. friction

D. tension

ANS: B

19. A process in joining hydrogen atoms which causes heat hotter than the sun is called _______ .

A. fusion

B. fission

C. friction

D. tension

ANS: A

20. Which transform heat energy to electric energy?

A. transformer

B. battery

C. generator

D. thermocouple

ANS: D

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