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63. How much work is done by 15 kW engine during 3.5 min?
1) Classify three kinds of statistics, their need, applicability, the idea of phase space, macro-microstates.
Suppose that you have a computer with a memory unit of 24 bits per word. In this computer, the assembly program’s instruction set consists of 198 different operations. All instructions have an operation code part (opcode) and an address part (allowing for only one address). Each instruction is stored in one word of memory. a. How many bits are needed for the opcode? b. How many bits are left for the address part of the instruction? c. How many additional instructions could be added to this instruction set without exceeding the assigned number of bits? Discuss and show your calculations. d. What is the largest unsigned binary number that the address can hold?
Write an assembly program using MARIE's assembly Instruction set that prompts the user to enter a non-negative integer that is less than 10. The program should include a subroutine that keeps prompting until a valid value is obtained. When a valid number is entered, it will be displayed. (Hint: Use JNS & JUMPI instructions to implement the subroutine)
A 43.7 L automobile airbag, a sample of gaseous nitrogen, has a pressure of 645 mmHg. Under constant temperature, the airbag’s pressure was changed to 517 mmHg. What would be the final volume of a gas? Make a conclusion about the relationship of pressure and volume.
In an experiment 1.90g of NH3 reacts with 4.96 of O2
4NH3(g) +5O2(g)=4NO(g)+6H2O(g)
Which is a limiting reactant
I need a code that will print all possible combinations and permutations of an array of words (eg. "alpha", "beta", "delta").
The code should be such that it permutates each line from the result of the combination, where 'r' will be the number of elements that will be selected at a time from the array.
Program to find the total salary by hand of an Employee
Class 1 Get basic pay, deduction, and bonus from the console.
Class 2 Calculate hra (5% of basic pay) and pf (20% of basic pay).
Class 3 Find the total salary (basicpay+hra-pf-deduction+bonus) and get the salary slip
Salary slip should contains :- basic pay, deduction, hra, pf, bonus and total salary by hand.
A steady stream of air enters a horizontal compressor at the rate of 0.02 kg/s. The air temperature is 10o C at entry and 300o C at exit. The velocity of the air is 30 m/s at entry and 6 m/s at exit. During its passage through the compressor, the air experiences a heat loss of 105 kJ/kg of air. Calculate:
(a) The change in kinetic energy per kg of air
(b) The change in enthalpy per kg of air
(c) The work done per kg of air
(d) The power required to drive the compressor
(e) The volume of air entering the compressor per second
(f) The flow area of the entry pipe if the entry pressure is 1 bar Take R = 0.287 kJ/kgK and cp = 1.005 kJ/kgK
Question 1
A horizontal "hot air blower" consists of a fan, an electrical heating element and a nozzle
The power input to the fan is 50 J/s and the power input to the heating element is 1.44 kJ/s. The air enters the fan with negligible velocity at a pressure of 1 bar and a temperature of 20 C, the volumetric flow rate being 0.5 m3 /min. After passing over the heating element, the air leaves the nozzle with a velocity of 25 m/s and a pressure of 1.1 bar. Treating the complete arrangement as a steady flow system and ignoring any heat loss from the system, determine:
(a) The mass flow rate of air entering the fan in kg per second (b) The kinetic energy of the air leaving the nozzle per second
(c) The change in enthalpy of the air occurring per second between entering the fan and leaving the nozzle
(d) The temperature of the air as it leaves the nozzle. (e) The density of the air as it leaves the nozzle
(f) The flow area at the nozzle exit.
Take R = 0.287 kJ/kgK and cp = 1.005 kJ/kgK
#339914 on Dec 2023