SNHS OLD SAGAY EXTENSION
ELECTRONICS 8 1ST QUARTER FINAL EXAM
NAME:__________________
DATE:__________
I.
SCORE:__________
Direction: Match the different hand tools with their actual pictures. Write the
letter only.
k_1. Desoldering tool
i_2. Soldering iron
h_3. Soldering stand
f_4. Long nose pliers
d_5. Portable electric drill
a_6. Paint brush
c_7. Hacksaw
j 8. Side-cutter
k 9. Wire splicer
b10. Magnifying glass
II.
Direction: Write the letter of the correct answer before the item.
_a_1. Which equipment does NOT belong to the group?
a. Screw driver
b. Long nose pliers c. Diagonal cutter
d. Side cutting
_b_2. Drill holes in the printed circuit board.
a. Long nose b. 12 V Mini-drill
c. Desoldering tool
d. Paint brush
_b_3. What color in the color coding scheme has an equivalent of 5 in the 2nd band?
a) Brown
b) Green
c) Red
d) Yellow
_b_4. What is the instrument that is used to measure resistance?
a) Ammeter b) Ohmmeter c) Voltmeter d) Wattmeter
_d_5. A drawing instrument with two legs hinged at one end and is used for drawing circles
and arcs of circles.
a. Drafting pen
b. Compass
c. Technical pen
d. Protractor
Identify the following symbols
_d_6.
a.. Transistor b. Transformer
c. Fuse
d. Resistor
_c_7.
a.. Transistor b. Transformer
c.Diode
d. Resistor
_a_8.
a.. Capacitor b. Transformer
c. Fuse
d. Resistor
_b_9
a.. Transistor b. Transformer
c. Fuse
d. Resistor
_a_10.
a.. Transistor b. Transformer
c. Fuse
d. Resistor
_ c_11. When sharpening hand tools, follow normal __ ___ procedure.
A. friendly
B. common C. safety
D. sanitary
_ d_12. As part of the normal operating and safety procedure, these tools should be
returned to the __________ after used.
A. classroom B. laboratory C. store
D. tool box
_a_13. If you used a damaged hand tool, what will you do?
A. Tag a tool.
B. Don’t use it.
C. Put in a trash can.
D. Sell it.
_a_14. If it cannot be avoided working with “ live wires” you may do the job provided you
have to work with:
A. both hands
B. goggles
C. one hand
D. wet hands
_b_15. This is safety reminder “prevention is better than ________”.
A. accident
B. cure
C. electric shock
D. nothing
III.
DIRECTIONS: Shown below are different electronic diagrams. Write the name of
the
diagram in the space provided for at the bottom of each diagram.
1._block diagram_
2.__schematic diagram__
3._Pictorial diagram____
4.__schematic diagram_______
5. __wiring diagram_____
Write the acronym of the ff.
6.PCB – Printed circuit board
8. PPE - Personal protective equipment
10.LED- Light Emitting Diode
7. VOM – Volt Ohm metre
9. CRT- Cathode ray Tube
IV.
Direction. Write T if the statement is true and F if false.
_T_1. Do not use flammable cleaners or water on electrical equipment.
_T_2. Make sure designated walkways are kept clear of any obstructions.
_T_3. Do not over tighten screws because the threads may become stripped.
_T_4. Electronics is a branch of technology that deals with many applications.
_F_5. Color Gold representing 10 % tolerance.
_F_6. Silver Representing 5 % tolerance
_F_7. The value of green in a resistor color code is 4.
_T_8. Tools are designed for specific use.
_T_9. Keep hand tools clean and free from ferrous or other contaminants.
_T_10. Aside from hand tools, equipment are also needed for more accurate and quality
output.
v. Solve for 5 points. Find the resistance of the following. And the minimum and
maximum value of resistor.
1. Resistor color code. Red, Brown, Yellow, Tolerance Gold
21 x 104 = 21 x 10,000 = 210,000 210,000 x .05 = 10,500 Ω
210,000 – 10,500 = 199,500 Ω minimum
210,000 + 10,500 = 220,500 Ω