CET Coding & Classification Systems 3

Question 1

Which SMD resistor code represents a value of 47 kΩ?

Accepted Answer

473

Answer

SMD resistor code 473 means 47 × 10³ = 47,000 Ω = 47 kΩ; the last digit is the power of ten.

Question 2

In ASCII, the decimal value 65 corresponds to which character?

Accepted Answer

A

Answer

ASCII decimal 65 is the uppercase letter 'A'; lowercase 'a' is decimal 97.

Question 3

What is the two's complement representation of −25 in an 8-bit system?

Accepted Answer

11100111

Answer

25 in binary is 00011001; inverting all bits gives 11100110, and adding 1 yields 11100111, which is −25 in two's complement.

Question 4

Which EIA standard governs the standard preferred number series (E12, E24, E96) for resistor values?

Accepted Answer

EIA-96

Answer

The EIA-96 standard defines the E96 series of preferred resistor values and is also commonly referenced for SMD coding using alphanumeric codes.

Question 5

In the IEC 60062 capacitor color code, a brown band in the multiplier position represents a multiplier of:

Accepted Answer

10

Answer

Brown in the multiplier band of the IEC capacitor color code represents ×10, consistent with its value in the resistor color code.

(CET) Certified Electronics Technician Practice Test