Describe the action of a commutator.

Q: Steam enters an isothermal compressor at 400 0C and 400 kPa. The exit pressure is 10 MPa, determine ...

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Q: Q2/ A small horizontal plate is in the shape of a square with a length of 5 cm. The plate is maintai...

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Q: wedge is used to raise a 30 kN block. If the angle of friction on all surfaces is 30°, determine the...

A: Given:Weight of the wedge block=30 kNweight of the lower part=7 kNangle of friction, θ=30o

Q: What is the definition of situational violence in Aviation Safety Regulations and give some of its e...

A: given; What is the definition of situational violence in Aviation Safety Regulations and give some o...

Q: What is the function of the primary flight control surfaces? How about secondary flight control surf...

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Q: Show that the ratio of the far inlet stream tube area to the far outlet stream tube area of the wind...

A: Wind turbine is a gadget that changes over the dynamic energy of wind into electrical energy. A huge...

Q: Steam at 6000 kPa, 400 degrees Celcius expands in a Rankine Turbine to 0.038 MPa. For 136 kg/s of st...

A: GIvenP1=6000kPa=6MPaT1=400oCP2=0.038MPa=38kPams=136kg/sBSR=4.80kg/kWh

Q: A rigid vessel contains 5 kg of wet steam at 0.4 MPa. After the addition of 9585 kJ the steam has a ...

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Q: The lower half of a 10 m high cylindrical container is filled with water and the upper half with oil...

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Q: A 6cm diameter horizontal water pipe expands to a 10cm diameter pipe. The average velocity and press...

A: Given Data D1=6 cm D2=10 cm V1=7 m/s P1=150 kPa

Q: For each part below, sketch T-s, T-v, and P-v diagrams. Clearly indicate the initial and final state...

A: Given conditions are  a) Water is taken isobarically from a saturated liquid at 275 kPa to a final s...

Q: 30 kN P 7 kN 26°

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Q: Question # 2: Draw shear force and bending moment diagram for beam below. 10 Nm 25 kNm 1 m 1 m 3 m 2...

A: First step is to find the reactions at two given supports by drawing free body diagram of beam. Then...

Q: 1. A building exhaust fan for a large commercial bullding weighs 180 pounds and operates at a speed ...

A: Given: weight of the exhaust fan→m=180 lbs Speed of the fan→N=600 rpm Hence rotational speed of the ...

Q: A certain quantity of air in a closed vessel with a fixed volume of 0.15 m3 exerts 1 MPa pressure at...

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Q: An ammonia vapor refrigeration cycle operates at an evaporator temperature of -17 °C and a condensin...

A: Given data Evaporator Temperature = -17 oC Condenser Temperature = 33 oC

Q: Train A is traveling at a constant speed vA = 30 mi/hr while car B travels in a straight line along ...

A: given; →speed of train A (VA)=30m/hr                                =44ft/s→conductor velocity with ...

Q: State the choice of power screw that suitable to be used for an application under the following cond...

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Q: Indicate the following statement is true or false: Long plastic products with uniform cross sections...

A: Extrusion: It is the process in which dies and plunger are used,the material is placed in front of d...

Q: (a) The plane stress at a point with respect to x-y-axes is shown in Fig. Q1(a). By using establishe...

A:   according to the given details:        

Q: Spring stiffness is important as it is the measurement of the resistance offered by the elastic body...

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Q: 1. Draw shear force and bending moment diagrams for the beam shown in figure. 30kN 2m Hello, Mr., tw...

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Q: The mass-spring-damper system when the mass is subjected to an externa nas the form of a square wave...

A: we know thatMd2xdt2=F-kx-RdxdtMd2xdt2+Rdxdt+kx=F                     ......................(1)Applyi...

Q: A refrigeration system uses R 12 as the refrigerant. The system is evacuated, then charged with refr...

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Q: A mountain has top pressure reading of 1 atm while its bottom has 2bars. The density of air in the a...

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Q: hoist 40-Rg Bale öf hay as shöWh. uck has reachne = 12 m, compute the corresponding tension Tin the ...

A: To find Tension T in rope.

Q: Discussion: 1- Define buoyancy and metacentric height ?

A: As per our guidelines, we are supposed to answer only first one question in case of multiple questio...

Q: certain quantity of gas with an initial condition of 14 bar, 0.08 m3, and 450 K expands at constant ...

A: Given Data State 1: 14 bar, 0.08 m3 and 450 K State 2: 0.25 m3, 14 bar

Q: DRax the Shear and moment diagrom 80 EN 10 E/m 2m R2 BL

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Q: Water flowing steadily at a rate of 0.17 m3/s is deflected downward by an angled elbow and exits to ...

A: Given: ρ=1000kg/m3D=30cm=0.3md=10cm=0.1mh=50cm=0.5mVelbow=0.03m3Q=0.17m3/s

Q: Compute the difference in pressure (PA-PB) if pipe A contains oil with sg = 0.92 and pipe B contains...

A: Given:Specific gravity of oil=0.92density of oil=0.92×1000=920 kg/m3density of water=1000 kg/m3densi...

Q: Convert a viscosity of 61 g/(cm s) to lbf/(hr ft2). Use dimensional analysis in cancellation of unit...

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Q: k1 m1 Jo- k2 m2

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Q: (1) Atwo-stage cascade refrigeration system uses ammonia as the working substance. The evaporator is...

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Q: Determine the torque received by the motor shaft running at 4250 rpm, transmitting 11 Hp, through a ...

A: Speed, N= 4250 rpm= 425060 rps Power, P= 11 Hp ⇒P= 11 Hp⇒P= 11(550)  ft.lb/s⇒P= 6050  ft.lb/s⇒P= 605...

Q: Air enters the compressor of an ideal gas refrigeration cycle at -23°C and enters the turbine at 17°...

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Q: 2. In this problem you are asked to investigate the effect of system pressure and steam quality on v...

A: Given : To find : Plot void fraction as a function of steam quality  

Q: D. Which vibration absorbers is not true? A. Vibration absorbers can be placed on either side of C. ...

A: It is required to choose correct option

Q: Problem Solving: Show your solution 1. A string 4 mm in diameter has original length 2 m. The strin...

A: Both numerical are the basic concepts of strength of material subject of mechanical engineering. Top...

Q: Find the initial velocity Final velocity=5 m/s Accelertaion=2 m/s2 time=3-s

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Q: Explain the significance of  understanding the effects of applying a torsional loading to a long str...

A: EXPLANATION: The torsional strain on a circular cross-section causes the cross-section to twist abo...

Q: A certain quantity of gas with an initial condition of 14 bar, 0.08 m3, and 450 K expands at constan...

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Q: 14- Cold water (cp _ 4.18 kJ/kg · °C) leading to a shower enters a well- insulated, thin-walled, dou...

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Q: 3-55 Consider a double-fluid manometer attached to an air pipe shown in Fig. P3-55. If the specific ...

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Q: Homework: For a unity feedback system with the forward transfer function: K(s + 20) s(s + 2)(s+3) G(...

A: G(s)=K(s+20)S(S+2)(S+3)H(s)=1T.F=G(s)1+(G(s).H(s)=G(s)1+G(s)=K(S+20)S(S+2)(S+3)+K(S+20) The characte...

Q: 1. Suppose that a car at rest begins accelerating at a constant rate of 15ft/sec2. (a) Determine how...

A: It is very basic question of mechanics. Topic motion under constant acceleration. Used concept is eq...

Q: Find the maximum shear stress if maximum principal stress is 30 MPa Minimum principal stress 20 Mpa

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Q: What are the limitations of a milling machine?

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Q: Energy, E; Specific energy, energy per unit mass, E/m, Power, V (E} = (mL^2/t^2), {E/m}= {L^2 /t^2},...

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Q: Consider the portion of an excavator shown. At the instant under consideration, the hydraulic cylind...

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Basic Terminology in Mechanics

The area of science and mathematics concerned the motion of the objects, the relation between the force matter, and motion if specified. Forces exerted over the objects result in displacements or changes in the position of an object concerning its environment. This branch of physics keeps its roots in Ancient Greece in the form of the scripts of Aristotle and Archimedes.