Which outcome occurs when a microwave oven operates with no load inside it?

💡 Explanation

When a microwave operates with no load, microwave energy reflects back into magnetron because there is nothing to absorb it, causing it to overheat because of increased power dissipation within tube. Therefore magnetron overheating occurs from reflected power, rather than arcing, saturation or malfunction which involve completely separate failure modes.

• Which outcome results when a superconducting quantum interference device exceeds its critical current?
• Which risk increases when aircraft static discharge wicks degrade, affecting distributed capacitance?
• Which outcome occurs when a variable capacitor's plates rapidly oscillate?
• Which risk increases when a pulsed terahertz wave encounters a resonant metal-dielectric metasurface?
• Which consequence results when reflective coating imperfections induce divergence?
• Which consequence results from excessive electron shielding during inertial confinement fusion?