DAD 220 Mod 5 Major Activity - Long

Why is fluid power preferred in mobile vehicles? 1. Power can be transmitted without any delay. 2. When overloaded, fluid power systems stop without damaging the components. 3. Speed variation cannot be achieved. 4. Fluid is incompressible Select one: a. 1 and 2 b. 2,3 and 4 C. 1,2 and 4 d. 1 and 4

19.a. A machine has a coupling that fails once every year and a half. What type of PM task can be created tomake sure that this coupling won’t fail on uptime?A. An electrical PM every six monthsB. An operator PM every yearC. A lubricator PM every eight monthsD. A mechanical PM every year19.b. If mission-critical equipment fails after a PM program is initiated, the best action is toA. install permanent employees to monitor the equipment until the proper maintenance schedule can be created.B. become a critic of the program until changes are made.C. modify the inspection and maintenance schedules to lower the failures.D. double the inspection schedule.19.c. Who is often overlooked as an important source of information and should be asked about PMmaintenance tasks in the program?A. Purchasing departmentB. Computer specialistsC. Machine operatorsD. outside contractors

13. Your body reduces blood flow to a region by vasoconstriction. The artery can be modeled as a cylinder with radius R and a length L, and one can consider only forces from pressure and tension forces in the muscle with surface tension constant y = or where r is the thickness of the muscle. A. R50 microns B. R 100 microns- C. R 200 microns. NORMAL ARTERY D. R-300 microns E. R 400 microns MUSCLE BOFLOW pressure forces from the blood Assuming that the pressure difference AP=10 kPa and a 200 kPa for a typical 10-micron muscle, what is the largest-size blood vessel for which such a muscle could still constrict the blood vessel? tension forces from muscle

جية - A - Northern Technical University Technical Eng. College/Kirkuk Fuel and Energy Eng. Tech. Dep. 4th Year Students Final Examination (2022-2023) Subj.: Process of unit operation Date: 6/6/2023 Time: 3 Hours: Morning & Evening Study Note/Answer only four questions, including the first question Q.1: Water is to be cooled in a packed tower from 330 to 295 K by means of air flowing counter currently. The liquid flows at the rate of 275 cm³/m² s and the air at 0.7 m³/m² s. The entering air has a temperature of 295 K and a humidity of 20%. Calculate the required height of tower and the condition of the air leaving at the top. The whole of the resistance to heat and mass transfer can be considered as being within the gas phase and the product of the mass transfer coefficient and the transfer surface per unit volume of column (ha) may be taken as 0.2 s¹. Assuming, the latent heat of water at 273 K = 2495 kJ/kg, specific heat capacity of dry air = 1.003 kJ/kg K, specific heat capacity of…

Q4: what is the difference between Wn and Wd?

do fast with explanation

OBJECTIVE TYPE QUESTIONS 1. The velocity ratio of two pulleys connected by an open belt or crossed belt is 2. (a) directly proportional to their diameters (b) inversely proportional to their diameters (c) directly proportional to the square of their diameters (d) inversely proportional to the square of their diameters Two pulleys of diameters d, and d, and at distance x apart are connected by means of an open belt drive. The length of the belt is (a)(d+d₁)+2x+ (d₁+d₂)² 4x (b)(d₁-d₂)+2x+ (d₁-d₂)² 4x (c)(d₁+d₂)+ +2x+ (d₁-d₂)² 4x (d)(d-d₂)+2x+ (d₁ +d₂)² 4x 3. In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then (a) open belt drive is recommended (b) cross belt drive is recommended (c) both open belt drive and cross belt drive are recommended (d) the drive is recommended depending upon the torque transmitted Due to slip of the belt, the velocity ratio of the belt drive 4. (a) decreases 5. (b) increases (c) does not change When two pulleys…

A flexible manufacturing cell consists of two machining workstations plus a load/unload station. The load/unload station is station 1 with one server (human worker).Station 2 consists of one CNC machining center. Station 3 has one CNC drill press. Thethree stations are connected by a part-handling system that has one work carrier. Themean transport time is 2.0 min. The FMC produces three parts, A, B, and C. The part-mixfractions and process routings for the three parts are presented in the table below. Theoperation frequency is fijk = 1.0 for all operations. Determine (a) maximum productionrate of the FMC, (b) corresponding production rates of each product, (c) utilization ofeach machine in the system, and (d) number of busy servers at each station. A spreadsheetcalculator is recommended for this problem.

A robot is used for loading and unloading of parts to automated flexible machines. Loading time is 1 minute; unloading time is 1.5 minutes; machining time 15 minutes; Robot travel time between the machines including the inspection time is 3 minutes. Cost of robot C,=30 TL/Hour; cost of machines C2=40 TL/Hour. How many machines (integer number) should be assigned to the robot so that the total robot and machine costs per cycle are minimized? 8 - 176 a) 4 b) 3 c) 2 d) e) 6.

10. The principle advantages of air flat plate over a liquid flat plate collector are: A. It is compact. B. Corrosion is eliminated. C. There is high storage and transfer of thermal energy. D. Possibility of freezing is eliminated. E. Less area of collectors is needed. O A+B only. O A + C only. A + B + D only. B + C +E only. O None of the abov

! Required information Problem 07.025 - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated liquid-vapor mixture at a pressure of 140 kPa. The refrigerant absorbs 200 kJ of heat from the cooled space, which is maintained at -10°C, and leaves as saturated vapor at the same pressure. Problem 07.025.b - Entropy change of the cooled space in an evaporating process Determine the entropy change of the cooled space. (You must provide an answer before moving on to the next part.) The entropy change of the cooled space is KJ/K.