24009. With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.
24010. The slope of operating line in the rectifying section of a distillation column is unity, if the reflux ratio is
24011. Vertical vessels are not supported by
24012. With increase in pressure drop (for a given particle size), the dust collection efficiency of a cyclone separator will
24013. Spherical shaped pressure vessel is considered to be the most ideal, because it can
24014. An adequate clearance between the tray and the shell wall of a distillation column is provided to
24015. Overall tray efficiency of a distillation column is the ratio of the number of
24016. Pick out the wrong statement about the design of a sieve plate column.
24017. Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than __________ mm.
24018. Multiple blade paddle agitator is used for mixing high viscosity liquids/paste in which the paddle diameter is commonly 0.8 times the tank diameter. However, the width of the blade is in the range of __________ times the paddle diameter.
24019. In a __________ rivetted joint, the rivets in the various rows are opposite to each other.
24020. The Panchayat Raj was introduced in India in:
24021. Generally, elliptical dished heads
24022. Pick out the wrong statement pertaining to the comparative evaluation of performance of the packed tower and the plate tower.
24023. The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is
24024. for fully open gate valves would be
24025. LMTD correction factor is used in heat exchanger design for
24026. Floating head heat exchangers are used for the
24027. The most common standard size of bubble caps used in industrial operation is
24028. Compensation against openings in process vessels for giving inlet and outlet connections, for providing sight glasses and manholes etc. is provided for strength and rigidity. The most efficient type of compensation is of __________ type.
24029. In case of a continuous distillation column, increase in reflux ratio may result in the
24030. In a distillation column, the minimum residence time for liquid in the downspout is about __________ seconds.
24031. Thickness of the frame of a plate and frame filter as compared to that of plates is
24032. Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower ?
24033. The thickness of heat transfer plates used in the plate type heat exchanger ranges from __________ mm, pressed in a single piece provided with grooves & corrugations.
24034. Rivets are generally specified by the
24035. Length to diameter ratio of most rotary driers is in the range of
24036. Tube wall thickness depends on the cor-rosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than __________ mm outside diameter is generally not recommended for fouling fluids.
24037. Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is about 200 poise. However, the baffle may be completely eliminated for mixing liquids having viscoisty above __________ poise.
24038. Ratio of tube length to shell diameter for a shell and tube heat exchanger is
24039. The dust collection efficiency of a cyclone separator
24040. In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to
24041. Which of the following types of reactors is the safest from operation point of view ?
24042. In a bag filter, the pressure drop increases directly as the
24043. The LMTD correction factor (FT) is applied in __________ heat exchangers.
24044. Movement of pipeline caused by thermal expansion is taken care by providing
24045. For a cylindrical shell, (subject to the thickness of uppermost course being more than the minimum for diaofthe tank in question), the thickness of the courses of shell
24046. In the design of a paddle agitator, the ratiois normally taken as
24047. The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the __________ stress.
24048. Hole diameter of the seive trays in the distillation column ranges from __________ mm.
24049. Factor of safety (i.e., overdesign factor) in heat transfer equipments is about __________ percent more than the actual/theoretical design factor.
24050. In which of the following processes light energy is converted into chemical energy?