Engineering Answers

6.371 kg of water vapour are contained at 150 kPa ad 90 per cent quality in a

suitable enclosure. Calculate the heat which must be added in order to just

produce a saturated vapor. What will the pressure be at the end of the

heating process? NOTE: - INDICATE THE HS and TS DIAGRAM - INDICATE THE INITIAL AND FINAL STATE OF THE SUBSTANCE

6.86 kg of water vapour are contained at 150 kPa ad 90 per cent quality in a

suitable enclosure. Calculate the heat which must be added in order to just

produce a saturated vapor. What will the pressure be at the end of the

heating process? NOTE: - INDICATE THE HS and TS DIAGRAM - INDICATE THE INITIAL AND FINAL STATE OF THE SUBSTANCE

6.86 kg of water vapor are contained at 150 kPa ad 90 percent quality in a

suitable enclosure. Calculate the heat in kJ which must be added in order to just

produce a saturated vapor. NOTE: - INDICATE THE HS and TS DIAGRAM - INDICATE THE INITIAL AND FINAL STATE OF THE SUBSTANCE

A piston cylinder containing steam at 700 kPa at 250 degrees celcius undergoes a constant pressure process until the quality is 70%. Determine: a). Work done b). Heat transferred c). Change in internal energy d). Change in enthalpy NOTE: - INDICATE THE HS and TS DIAGRAM - INDICATE THE INITIAL AND FINAL STATE OF THE SUBSTANCE

a welded joint, as shown in fig. is subjected to an eccentric load of 2500 n. find the size of the weld, if the maximum shear stress in the weld is not to exceed 50 n/mm^2

A plate 60 mm wide and 12.5 mm thick is to be welded to another plate by means of parallel fillet welds. The plates are subjected to a load of 80 kN. Find the length of the weld. Assume allowable shear strength to be 60 MPa.

Design the concrete mix using the following conditions:(ACI Method)

Summarize also the total batch weights for one cylinder mold

f'cr= 28 Mpa

Water-Cement Ratio = 0.5

Non-air entrained concrete

Slump = 75 mm

No Admixture

Spec.Gravity of Cement = 3.15

Fine Aggregates

Fineness modulus = 2.80

Spec.Gravity(SSD) = 2.50

Moisture Content,% = 2.00

Absorption,% = 0.50

Coarse Aggregates - Subangular

Nominal Max.Size = 19 mm

Spec.Gravity(SSD) = 2.75

Moisture Content,% = 1.25

Absorption,% = 0.50

Oven dry-rodded density = 1700.00 kg/cu.m.

Summarize also the total batch weights for one cylinder mold

An epicyclic gear train as shown in figure the number of teeth on gear A,B,C are 48,24,50 respectively. A) If the arm rotates with 340 rpm in clockwise find Speed of C when A is fixed Speed of A when C is fixed B) Speed of B and C when arm is fixed and A is rotating with 340

A cam with minimum radius of 88 mm rotating clockwise is required to give the motion to roller follower. The motion is as described below: 1. To move outward through 70 mm during 100 deg. With Simple harmonic motion of the cam rotaion 2. To dewell for next 80 deg. 3. To return to its starting posistion during next 90 deg with uniform acceleration. 4. To dewell for the next period of a revolution. if the diameter of the roller is 5mm then Draw the cam profile 1.when the line of the stroke of the follower passes through the center of the cam shaft and 2. when the line of the stroke of the follower is off set by 15mm. 

 A pinion having 40 teeth drives a gear having 80 teeth. the profile of the gear is involute with pressure angle 20, 12 mm module and 5 mm addendum. Find the length of contact 1) Arc of contact 2) Contact ratio 3) Ratio of the pitch line velocity to Sliding velocity at start point of contact and end point of the contact 4) Angle of action for pinion and gear