Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich effect arises when an automotive air conditioning system's expansion valve freezes?
A)Refrigerant pressure oscillation✓
B)Compressor mechanical failure
C)Condenser subcooling increase
D)Evaporator heat transfer gain
💡 Explanation
Refrigerant pressure oscillates because the expansion valve's blockage interrupts the refrigerant flow, initiating unstable evaporation. This causes surging 'hunting' cycles, of high and low pressure, therefore, oscillating pressure results rather than compressor failure which happens over longer periods.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Science →- Which outcome occurs when a growing crystal of gallium arsenide (GaAs) is excessively doped with silicon?
- Which outcome occurs when a bimetallic strip thermometer exceeds its design temperature when in steam?
- Which consequence results when complete mass-energy equivalence occurs in a hypothetical thruster?
- Which lattice energy change occurs as ionic compounds are heated to melting point?
- Which outcome signifies flow regime transition according Reynolds number increase within porous media?
- Which distortion influences a GPS satellite's clock rate?
