engineering recuitment BHEL Engineer Trainee Mock Test 2025 Heat Transfer Convection Free Convection
A square plate 0.5 m side maintained at a uniform temperature of 500 K is suspended in an atmosphere at 27°C. The Grashoff Number is ____. Given β = 25 × 10-3 K-1, ν = 20 × 10-6 m2/s.
1
1.53 × 1010
2
2 × 1010
3
3 × 1010
4
1 × 1010