Atransmission line (tl) of length l and conductance per unit length g' is connected to an ideal constant voltage generator v. the end of the line is terminated in a pure resistive load rl. assume that the losses in the conductors are negligible. the current l(z) in the tl is measured in the middle of the tl (this is at z-l/2). if the load is reduced to half its original value, the current in the middle of the line will increase by a factor 2 decrease by a factor 2 remain constant none of the above options

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?