GATE_AE_2027_MOCK_04_Q20
GATE 2027 Aerospace Engineering All-India Master Mock 04 (Aerospace Structures, Thin-Walled Beams & Aeroelasticity)
MCQ · 1 Mark
Aerodynamics & Fluid Mechanics • Wind Tunnel Testing & Instrumentation • Wind Tunnel Boundary Corrections & Hot Wire
Hot-wire anemometry measures instantaneous flow velocity primarily based on the principle of:
(A) Convective heat transfer from a heated fine wire to the fluid
(B) Piezoelectric pressure distortion
(C) Optical Doppler shift of laser light
(D) Magnetic induction in conducting fluids
Answer Key:
A
Step-by-Step Verified Solution
### Solution: A hot-wire anemometer uses convective heat loss from an electrically heated wire to determine local flow velocity via King's law. Correct: A.