cameroon gce intermediate level 2025 electronic systems 1
cameroon gce intermediate level 2025 electronic systems 1
Question 1:
The colour code of a 220kΩ±5% resistor is
A. Red, Red, Yellow, Silver
B. Red, Red, Orange, Gold
C. Red, Red, Yellow, Gold
D. Red, Red, Orange, Silver
Question 2:
The two main characteristics of a resistor are
A. resistance and power
B. current and power
C. voltage and current
D. resistance and current
Question 3:
Wire Wound Resistors are usually used for
A. low current systems
B. low power systems
C. high resistance systems
D. high power systems
Question 4:
The tolerance of the E12 series is
A. ±40%
B. ±20%
C. ±10%
D. ±5%
Question 5:
Which of the following, in a four band of resistor, represents numbers in ohms?
A. Second and third
B. First
C. First and second
D. Second
Question 6:
Which of the following are resistors with colour coded values?
A. Wire wound resistors
B. Potentiometer
C. Carbon composition resistors
D. Chip resistors
Question 7:
Which of the following resistors has the smallest physical size?
A. Carbon composition resistor
B. Wire wound resistor
C. Surface mount resistor
D. Rheostat
Question 8:
The name of the component represented in figure 1 is a(n)
A. rheostat
B. carbon composition resistor
C. potentiometer
D. metal film type resistor
Question 9:
The preferred resistance series of potentiometers is
A. E12
B. E24
C. E6
D. E3
Question 10:
The component with the reference 1N4001 is a(n)
A. signal diode
B. rectification diode
C. zener diode
D. varactor diode
Question 11:
Which of the following is the role of the circuit in figure 2?
A. Interfacing a high voltage circuit to a low voltage circuit
B. Interfacing a low voltage circuit to a high voltage circuit
C. Interfacing a high voltage circuit to a high voltage circuit
D. Interfacing a low voltage circuit to a low voltage circuit
Question 12:
Which of the following is the role of the diode D1 in figure 2?
A. It protects the relay when the relay is on
B. It protects the relay when the relay is off
C. It protects the transistor when the transistor is on
D. It protects the transistor when the transistor is off
Question 13:
The appropriate reference of the diode D1 in the circuit of figure 2 is
A. 1N4007
B. BA157
C. BY253
D. 1N4148
Question 14:
What is the role of the LED L1 in figure 2?
A. It is used to protect the relay
B. It is used to indicate when the relay is on
C. It is used to indicate when the transistor is off
D. It is used to indicate when the relay is off
