1. Al Riffa High School For Girls
للبنات الثانوية الرفاع مدرسة
Page 1
Creative Design & Innovation (CDI)
Revision-11G
Instructor: Fatima Adly Name:
Grade: ( ) Date:
Part 1: Choice the correct answer
1) Current that changes value and/or direction with time
a. AC- Alternating current
b. DC- Direct current
c. AC and DC
2) The charge difference between two points
a. Current
b. Voltage
c. Resistance
3) Which of the following is NOT a function of a resistor
a. Adjust signal levels
b. Increase current flow
c. Divide voltages
4) When the digital multimeter is used to measure the voltage it’s called:
a. Ammeter
b. Ohmmeter
c. Voltmeter
5) Which of the following is true about parallel circuits
a. The current is the same everywhere in the circuit
b. One path for the current
c. The voltage across the loop is the same
6) Which of the following is a non-ferrous metal
a. Gold
b. Carbon steel
c. Cast iron
7) An electric safety device that protects circuits from excessive current
a. Relay
b. Transistor
c. Fuse
2. Al Riffa High School For Girls
للبنات الثانوية الرفاع مدرسة
Page 2
Part 2: True or False
aPart 3: classify as parallel or series
Two or more pathways - One bulb blows others stay lit - Current splits up and recombines –
One pathway - Voltage across loop is the same - One bulb blows, all bulbs go out - Voltage is
shared around the circuit - Current is the same everywhere in the circuit
Parallel Series
1) Thermosetting plastic can be reshaped by reheating it
a. True b. False
2) We can use pigments to change the color of the plastic
a. True b. False
3) In series circuit, if one bulb blows the rest will work
a. True b. False
4) Battery is an AC power supply
a. True b. False
5) Relays work as electromagnetic switches
a. True b. False
6) Ferrous metals don’t contain iron
a. True b. False
3. Al Riffa High School For Girls
للبنات الثانوية الرفاع مدرسة
Page 3
Part 4(a): Label the diagram
Part 5: Short Answer Questions.
1) Using 7-segment display. What segments should be on to display the letter “S
”.
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2) Name the parts of a Relay system?
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3) What are the advantages and disadvantages of using plastic?
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4. Al Riffa High School For Girls
للبنات الثانوية الرفاع مدرسة
Page 4
4) What is an alloy and what advantages does it have over pure metal?
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5) Compare between glass reinforced plastic (GRP) and carbon-fiber reinforced plastic (CFRP).
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6) State whether the devices and products below are ‘analogue’ or ‘digital’.
• An MP3 Player is a(n) analogue / digital device.
• A Microphone is a(n) analogue / digital device.
• A computer chip is a(n) analogue / digital device.
• A computer router is a(n) analogue / digital device.
Part 6: Calculations
1) Using ohm’s law. If the value of the resistor is 10kΩ and the current is 7.5mA, find the value
of the voltage?
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2) Find the value / color of the resistor.
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Good Luck
