Understanding Electrical Failure Modes

What is the most common failure mode in electrical circuits due to excessive current?

• Open circuit

• Short circuit

• Thermal runaway

• Electromagnetic interference

Which of the following is a fault caused by a broken connection in an electrical circuit?

• Short circuit

• Open circuit

• Overvoltage

• Undervoltage

What is the term for the gradual degradation of a component's performance over time?

• Catastrophic failure

• Wear-out failure

• Intermittent fault

• Latent fault

Which failure mode is characterised by a sudden and complete loss of function?

• Intermittent fault

• Catastrophic failure

• Progressive failure

• Latent fault

What is the primary cause of thermal runaway in semiconductors?

• Excessive voltage

• Excessive current

• Insufficient cooling

• Electromagnetic interference

Which of the following is a common symptom of an intermittent fault in an electronic device?

• Device does not power on

• Device works sporadically

• Device overheats

• Device emits smoke

What is the effect of electromagnetic interference on electronic circuits?

• Increased resistance

• Signal distortion

• Reduced capacitance

• Increased inductance

Which component is most likely to fail due to overvoltage?

• Resistor

• Capacitor

• Inductor

• Transformer

What is the primary consequence of a latent fault in an electronic system?

• Immediate system shutdown

• Gradual performance degradation

• Unpredictable system behaviour

• No immediate effect

Which of the following is a method to prevent failure due to thermal stress in electronic components?

• Increasing voltage

• Reducing current

• Enhancing cooling

• Decreasing resistance