TLE (6) - Basic Electronics exam with answer key 2024
1) A schematic diagram shows the components of an electronic circuit by means of:
a. Symbol
b. Construction
c. Physical appearance
d. Linear appearance
2) What is the best place for electronic hand tools and equipment?
a. Tool box
b. Tool cabinet
c. Tool room
d. Tool bag
3) Imagine three resistors in parallel, with values of 22 ohms, 27 ohms, and 33 ohms. If a 12 V battery is connected
across this combination, what is the current drawn from the battery?
a. 1.4 A
b. 15 mA
c. 150 mA
d. 1.5 A
4) Which of the following is a non-polarized electronic component?
a. Transistor
b. Resistor
c. Diode
d. Electrolytic capacitor
5) The voltage rating found in a capacitor is called ________.
a. Peak-reverse voltage
b. Working voltage
c. Blow-up voltage
d. Breakdown voltage
6) A diode is an electronic part that at all times is expected to do one of the following functions. Which one is it?
a. allow current to flow in both directions
b. multiply voltage
c. allow current to flow in one direction only
d. not allow any current flow
7) There are various types of diodes. This diode that acts as a regulator is the ________.
a. Silicon diode
b. Crystal diode
c. LED
d. Zener diode
8) You will find an electrode nearest the white band on a rectifier. What is it?
a. Anode
b. Cathode
c. Gate
d. Main Terminal
9) When a diode is tested and the reading is zero, it means the diode is ________.
a. Shorted
b. Open
c. Leaky
d. Good
10) If the transistor is an NPN type, the base is ________.
a. negative & positive
b. negative
, c. positive
d. common
11) If the arrow of a transistor symbol is pointing inward it tells us that the transistor is:
a. NPN
b. PNP
c. Bipolar
d. Injunction
12) In the electronic symbol of a transistor, the electrode with an arrow is the:
a. Emitter
b. Base
c. Collector
d. Cathode
13) The production of magnetic field by current in a conductor is ________.
a. Electromagnetism
b. Ferromagnetism
c. Magnetism
d. Diamagnetism
14) The type of current whose 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
15) Printed on the dial of an AM radio is an RF band covering _________.
a. kHz 76 - 90 MHz
b. 88 - 108 MHz
c. 16 Hz - 20 kHz
d. 535 - 1,605 kHz
16) An ordinary radio can be tuned to different stations. The electronic component responsible for this function is
the:
a. Tuning capacitor
b. Oscillator coil
c. IF transformer
d. Detector diode
17) The condition of a loud speaker is tested more accurately using one of the ranges listed below:
a. R x 1K
b. R x 10
c. R x 1
d. R x 10K
18) Working efficiently is a good work habit. Tinning the tip of a soldering iron refers to:
a. Cleaning the tip with a sand paper
b. Making the tip pointed
c. Cutting the tip
d. Applying flux to the tip
19) The common cause of an erratic or distorted sound of a transistor radio is a defective?
a. Amplifier
b. Volume control
c. Antenna
d. Tuner
20) An appliance with 110 Volts AC Supply is accidentally plugged to a 220 Volts AC outlet. What component is
usually destroyed?
a. Switch
b. AC plug
c. Line fuse
d. Power transformer
1) A schematic diagram shows the components of an electronic circuit by means of:
a. Symbol
b. Construction
c. Physical appearance
d. Linear appearance
2) What is the best place for electronic hand tools and equipment?
a. Tool box
b. Tool cabinet
c. Tool room
d. Tool bag
3) Imagine three resistors in parallel, with values of 22 ohms, 27 ohms, and 33 ohms. If a 12 V battery is connected
across this combination, what is the current drawn from the battery?
a. 1.4 A
b. 15 mA
c. 150 mA
d. 1.5 A
4) Which of the following is a non-polarized electronic component?
a. Transistor
b. Resistor
c. Diode
d. Electrolytic capacitor
5) The voltage rating found in a capacitor is called ________.
a. Peak-reverse voltage
b. Working voltage
c. Blow-up voltage
d. Breakdown voltage
6) A diode is an electronic part that at all times is expected to do one of the following functions. Which one is it?
a. allow current to flow in both directions
b. multiply voltage
c. allow current to flow in one direction only
d. not allow any current flow
7) There are various types of diodes. This diode that acts as a regulator is the ________.
a. Silicon diode
b. Crystal diode
c. LED
d. Zener diode
8) You will find an electrode nearest the white band on a rectifier. What is it?
a. Anode
b. Cathode
c. Gate
d. Main Terminal
9) When a diode is tested and the reading is zero, it means the diode is ________.
a. Shorted
b. Open
c. Leaky
d. Good
10) If the transistor is an NPN type, the base is ________.
a. negative & positive
b. negative
, c. positive
d. common
11) If the arrow of a transistor symbol is pointing inward it tells us that the transistor is:
a. NPN
b. PNP
c. Bipolar
d. Injunction
12) In the electronic symbol of a transistor, the electrode with an arrow is the:
a. Emitter
b. Base
c. Collector
d. Cathode
13) The production of magnetic field by current in a conductor is ________.
a. Electromagnetism
b. Ferromagnetism
c. Magnetism
d. Diamagnetism
14) The type of current whose 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
15) Printed on the dial of an AM radio is an RF band covering _________.
a. kHz 76 - 90 MHz
b. 88 - 108 MHz
c. 16 Hz - 20 kHz
d. 535 - 1,605 kHz
16) An ordinary radio can be tuned to different stations. The electronic component responsible for this function is
the:
a. Tuning capacitor
b. Oscillator coil
c. IF transformer
d. Detector diode
17) The condition of a loud speaker is tested more accurately using one of the ranges listed below:
a. R x 1K
b. R x 10
c. R x 1
d. R x 10K
18) Working efficiently is a good work habit. Tinning the tip of a soldering iron refers to:
a. Cleaning the tip with a sand paper
b. Making the tip pointed
c. Cutting the tip
d. Applying flux to the tip
19) The common cause of an erratic or distorted sound of a transistor radio is a defective?
a. Amplifier
b. Volume control
c. Antenna
d. Tuner
20) An appliance with 110 Volts AC Supply is accidentally plugged to a 220 Volts AC outlet. What component is
usually destroyed?
a. Switch
b. AC plug
c. Line fuse
d. Power transformer
