Class interval { public: // // an interval is a period of time beginning with a starting time // and running up to, but not including, its stop time. // interval (); interval (datetime start, datetime stop); interval (datetime start, duration length); datetime getstart() const; void setstart (datetime); datetime getstop() const; void setstop (datetime); duration getduration(); bool contains (datetime d); bool overlaps (interval intrvl); bool operator== (const interval& other) const; private: datetime thestart, thestop; }; using the junit style, write a self-checking test for the setstop function.

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

If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.