Latest TLE Reviewer 16

1. Which is TRUE of a series DC motor with no load?

A. Tendo stop or not start

B. Maybe damaged by excessive speed

C. Has reverse direction

D. becomes an AC generator

ANS: B

2. A fuse marked 250V, 650m can be used in circuits with an “open-fuse” supply voltage _________ .

A. 125 volts

B. 500 volts

C. 5000 volts

D. 250 volts

ANS: A

3. To prevent transistor from getting hot, use _________ .

A. silicon grease

B. insulator

C. heat sink

D. exhaust fan

ANS: C

4. To obtain a higher value of resistance, resistors are _______ .

A. reverse

B. parallel

C. forward

D. series

ANS: D

5. Which fuse has its internal fusible wire wrapped around an insulator?

A. a slow-blow type fuse

B. An inductive fuse

C. a capacitive

D. intended for high voltage fuse

ANS: D

6. Which would be considered “basic components of a power supply?

A. Zener, regulator, transformer

B. Regulate, diode, AC power, load

C. Transformer, bridge, capacitor, load

D. Filter, regulator, rectifier, transformer

ANS: B

7. When two capacitors the rise and fall of alternating current and voltage?

A. Graph

B.  Sine wave

C. Fluctuation

D. Cycle

ANS: B

8. When two capacitors are connected in parallel the capacitance will ______ .

A. increase

B. since wave

C. decrease

D. increase and decrease

ANS: A

9. Which circuit ha the most gain?

A. common emitter

B. common collector

C. common base

D. emitter follower

ANS: A

10. Which rectifier circuit uses four diodes for its recitification?

A. Half-wave rectifier

B. full-wave Center Tap

C. Full-wave Bridge rectifier

D. Split type

ANS: C

11. When a resistor is open, the resistance ______.

A. increase

B. gets zero

C. decrease

D. is infinite

ANS: D

12. A low voltage power supply converts __________ .

A. Ac voltage output

B.  Pulsating DC voltage

C. DC output voltage

D. AC and DC voltage outputs

ANS: B

13. When checking an open resistor using an ohmmeter the resistance reads _______ .

A. zero level

B. high resistance but within the tolerance

C. infinite

D. low but not zero

ANS: C

14. Moving one plate of a capacitor further away from the other will ________.

A. decrease capacitance

B. increase capacitance

C. decrease voltage rating

D. increasing mutual transducture

ANS: A

15. In checking capacitor to see if it is shorted, open or leaky, you would use the ohmmeter range.

A. lowest

B. highest

C. middle

D. You cannot check the capacitor this way

ANS: B

16. A schematic diagram shows the components of an electronic circuit by means of ______ .

A. a symbol

B. a construction

C. physical appearance

D. linear appearance

ANS: A

17. If there are only two resistors with the same values in parallel circuit, which formula ,may be used o find its total resistance?

A. Rt=R/n

B. Rt = (R1xR2)(R1+R2)

C. 1/Rt=1/R1+1/R2+ …. 1/Rn

D. Rt=(R1+R2)(R1Xr2)

ANS: B

18. Imagine three resistor in parallel, with the values of 22ohms, 17 ohms and 33 ohms. If a 12 V battery is connected across this combination, what is the current drawn from the battery?

A. 1.4A

B. 15mA

C. 150mA

D. 1.5A

ANS: A

19. Which of the following is non-polarized electronic component?

A. transistor

B. resistor

C. Diode

D. electrolytic capacitor

ANS: B

20. The voltage rating found in a capacitor is called _________ voltage.

A. peak reverse

B. working

C. blow-up

D. breakdown

ANS: B

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