In an experiment, the temperature of a hot gas stream is to be measured by a thermocouple with a spherical junc-tion. Due to the nature of this experiment, the response time of the thermocouple to register 99 percent of the initial tem-perature difference must be within 5 s. The properties of the thermocouple junction are k = 35 W/m⋅K, rho = 8500 kg/ m 3 , and c p = 320J/kg⋅K. If the heat transfer coefficient between the thermocouple junction and the gas is 250 W/ m 2 ⋅K, deter-mine the diameter of the junction.

Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10