cameroon gce advanced level 2025 design of electronic systems 1

Based on the image provided, here is the extracted data, which includes a set of multiple-choice questions related to electronics and electrical components.

Question 1

The tolerance of the E12 series is

A. ±20%

B. ±10%

C. ±5%

D. ±2%

Question 2

The resistance of the resistor with number code 390R J is

A. 39kΩ±10%

B. 39Ω±10%

C. 390kΩ±5%

D. 390Ω±5%

Question 3

Which of the following resistors has the largest physical size?

A. Wire wound resistors

B. Metal film type resistors

C. Carbon composition resistors

D. Carbon film type resistors

Question 4

How do fixed resistors generally failed?

A. By rising their value & becoming an open circuit

B. By rising their value

C. By becoming an open circuit

D. By reducing their value over time

Question 5

Which of the following resistor is an example of fixed type resistors?

A. Metal stripe type resistors

B. Carbon film type resistors

C. Varistor type resistors

D. Metal oxide type resistors

Question 6

Which of the following range is suitable for carbon resistor?

A. 1 to 220kΩ

B. 1 to 100kΩ

C. 1 to 22kΩ

D. 1 to 82MΩ

Question 7

Wire wound type resistor works at high frequency like a(n)

A. inductor

B. capacitor

C. diode

D. transistor

Question 8

Potentiometers are used in a circuit to

A. vary the inductance

B. vary the capacitance

C. vary the current

D. vary the voltage

Question 9

How many connections does a potentiometer have?

A. 1

B. 2

C. 3

D. 4

Question 10

One application of a potentiometer that uses logarithmic variation is in

A. speed control

B. brightness control

C. temperature control

D. volume control

Question 11

Which one of the following is a polarized capacitor

A. Teflon capacitor

B. Ceramic capacitor

C. Electrolytic capacitor

D. Paper capacitor

Question 12

Which of the following types of capacitors are used in the smoothing circuit of a regulated power supply?

A. Ceramic capacitors

B. Electrolytic capacitors

C. Paper capacitors

D. Plastic capacitors

Question 13

Four 10nF capacitors are connected in parallel. The total capacitance is

A. 10nF

B. 20nF

C. 2.5nF

D. 40nF

Question 14

When the plate area of a capacitor increases, the

A. capacitance increases

B. capacitance decreases

C. the capacitance remain constant

D. capacitance gradually decreases and later on remain constant

Question 15

Two capacitors each having a capacitance rating of C and voltage rating of V are connected in series. The capacitance and voltage rating of the combination will be

A. C/2; 2V

B. 2C; 2V

C. C; V

D. C/2; V/2

Question 16

The capacitor used in high frequency circuits are the

A. electrolytic capacitors

B. air capacitors

C. mica capacitors

D. glass capacitors