83951. The sum of the digits of two digit number is 11 and the difference of the first digit from the second is The two digit number is
83952. If X+X/2+X/4+X/8+x/16=31/16,then value of x is
83953. If 7 8/13+19 1/13-8 7/65 –x=15 6/13 then x is
83954. 8 3/7 cr 2 1/3+5 1/3+1 1/3=?
83955. Sum of two numbers is Their difference is Then the large number is
83956. The rotary compressors are suitable for large discharge of air at low pressure.
83957. The stagnation pressure rise in a centrifugal compressor takes place
83958. The total heat rejected in a reciprocating air compressor is equal to the sum of the heat rejected during polytropic compression per kg of air and heat rejected in the intercooler per kg of air.
83959. In a jet propulsion
83960. An open cycle gas turbine works on the same cycle as that of a closed cycle gas turbine.
83961. Which of the following fraction is highest?
83962. In a single acting reciprocating compressor, the suction, compression and delivery of air takes place in __________ of the piston.
83963. The increase in pressure in a vane blower takes place first due to compression and then due to back flow of air.
83964. The maximum delivery pressure in a rotary air compressor is
83965. The capacity of a compressor is expressed in
83966. Intercooling in multi-stage compressors is done
83967. For a two stage reciprocating compressor, compression from p1 to p3 is with perfect intercooling and no pressure losses. If compression in both the cylinders follows the same polytropic process and the atmospheric pressure is pa, then the intermediate pressure p2 is given by
83968. The ratio of workdone per cycle to the stroke volume of the compressor is known as
83969. The clearance volume in the compressor is kept minimum because it effects on volumetric efficiency.
83970. The inlet pressure is always __________ the discharge pressure.
83971. Square root of 9+Square root of 7+Square root of 3+Square root of 1=?
83972. In the aircraft propellers
83973. The type of rotary compressor used in gas turbines, is of
83974. The volume of air delivered by the compressor is called
83975. The efficiency of a jet engine is higher at
83976. In axial flow compressor, exit flow angle deviation from the blade angle is a function of
83977. Rotary compressors are used for delivering
83978. Workdone by a two-stage reciprocating air compressor per cycle is equal to the workdone in LP. cylinder and H.P. cylinder.
83979. A rotary compressor is driven by an
83980. In a centrifugal compressor, an increase in speed at a given pressure ratio causes
83981. A large clearance Volume in a reciprocating compressor results in
83982. A closed cycle gas turbine gives __________ efficiency as compared to an open cycle gas turbine.
83983. Gas turbine as compared to steam turbine
83984. Intercooling in gas turbines
83985. When the temperature of air leaving the intercooler, in a two stage compression with intercooler, is __________ the original atmospheric air temperature, then the intercooling is known as perfect or complete intercooling.
83986. The actual volume of air delivered by a compressor, When reduced to the normal temperature and pressure conditions is called compressor capacity.
83987. The compression ratio in a gas turbine is
83988. Intercooling in compressors results in saving of power in compressing given volume of air to a given pressure.
83989. Only rocket engines can be propelled to space because
83990. The maximum combustion pressure in gas turbine is __________ as compared to I.C. engine.
83991. An aftercooler is used to
83992. High air-fuel ratio in gas turbines
83993. The ratio of the volume of free air delivery per stroke to the swept volume of the piston, is known as
83994. If p1, is the pressure of air entering the L.P. cylinder and p2 is the pressure of air leaving the L.P. cylinder (or intercooler pressure), then the ratio of cylinder diameters for a single acting, two stage reciprocating air compressor with complete intercooling is given by (where D1 = Dia. of L.P. cylinder, and D2 = Dia. of H.P. cylinder)
83995. The ratio of the indicated power to the shaft power or brake power of the motor or engine required to drive the compressor, is called
83996. The increase in pressure in a roots blower is entirely due to back flow of air.
83997. The type of rotary compressor used in aeroplanes, is of
83998. An axial compressor gives optimum performance at high speeds and large volume flows.
83999. In a reciprocating air compressor, the compression work per kg of air
84000. The degree of reaction in an axial flow compressor is defined as the ratio of static enthalpy rise in the
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