Answer:
Maximum allowable chip power is 0.35 W
Explanation:
This question is incomplete. The complete question is
A square isothermal chip is of width w = 5 mm on a side and is mounted in a substrate such that its side and back surfaces are well insulated; the front surface is exposed to the flow of a coolant at t[infinity] = 15°c. from reliability considerations, the chip temperature must not exceed t = 85°c. f the coolant is air and the corresponding convection 200 w/m2 k, what is the maximum allowable chip power?
<u>ANSWER:</u>
The heat transfer through convection, we have the equation:
q = hA(T - T∞)
where,
q = power transfer through convection = ?
h = convection coefficient = 200 W/m²K
A = Area of convection surface = (0.005 m)² = 0.000025 m²
T = Chip surface temperature = 85° C
T∞ = Fluid temperature = 15° C
Therefore,
q = (200 W/m².K)(0.000025 m²)(85° C - 15° C)
<u>q = 0.35 W</u>
Since, difference in temperature is same on both Celsius and kelvin scale. Therefore, Celsius is written as kelvin for difference and they shall be cancelled.
Answer:
High speed cutting steel tool are commonly used steel tool for cutting the tool materials. It is basically used in condition when the material looses its hardness and it is a subset of tool steel. It is majorly used in power saw blades.
There are mainly two types of high speed steel cutting tools are:
1) Tungsten type: This type of tool are basically designed for T grades. Tungsten maintains the efficiency and properties in the high temperature. It is denoted by T1.
2) Molybdenum type: This type of tool are designed for M grade and it is widely use in industries. Molybdenum high speed steel are better in certain cases as compared to tungsten type.
Answer:
See explanations for step by step procedures into getting answer.
Explanation:
Given that:
A fluid particle flowing along a stagnation streamline, as shown in Video V4.9 and Fig. P4.35, slows down as it approaches the stagnation point. Measurements of the dye flow in the video indicate that the location of a particle starting on the stagnation streamline a distance s = 0.8 ft upstream of the stagnation point at t = 0 is given approximately by s = 0.8e-0.61t where t is in seconds and s is in feet.(a) Factor the relation for the speed as a function of position out of the relation for speed as a function of time. What is the expression for speed V in terms of position s only
(b) For the position as a function of time given in the problem, what is the relation between the speed of the particle V and time t
(c) Symbolically, what does the derivative of position with respect to time equal.
See comolete solving at attachment
Answer:
Explanation:
Ohms Law I=E/R (resistive requires no power factor correction)
150/25= 6 amps