101. A turbo-prop is preferred to turbo-jet because
102. The air power of the compressor is also known as
103. The overall isothermal efficiency of the compressor is defined as the ratio of
104. The minimum work required for a three stage reciprocating air compressor is __________ the work required for each stage.
105. For a multi-stage compressor, the polytropic efficiency is constant throughout for all the stages.
106. In a high pressure compressor, the delivery pressure is
107. When the outlet angle from the rotor of a centrifugal compressor is more than 90°, then the blades are said to be
108. In axial flow compressors, the flow of air is parallel to the axis of compressor.
109. The ratio of the isothermal power to the shaft power or brake power of the motor or engine required to drive the compressor is called overall isothermal efficiency.
110. In a double acting compressor, the air is compressed
111. The basic principle of the rocket propulsion is the same as that of jet propulsion.
112. In a centrifugal compressor, the flow of air is __________ to the axis of compressor.
113. For minimum work required to compress and deliver a quantity of air by multi-stage compression,
114. Separators are generally used in air compressor installations
115. If the flow of air through the compressor is perpendicular to its axis, then it is a
116. In air compressors, free air delivery means the
117. Fill in the blanks using the suitable words in the choices. She looks ill, .........?
118. The gas in cooling chamber of a closed cycle gas turbine is cooled at
119. A 3 m3/min compressor means that it
120. The compression ratio for the compressor is always __________ unity.
121. The assumption made in two stage compression with intercooler is that
122. With the decrease in compression ratio, the volumetric efficiency
123. The volume of air delivered in a medium capacity air compressor per unit time is
124. In a closed cycle gas turbine, the air is compressed
125. In a single stage, single acting reciprocating air compressor, without clearance volume, the workdone is minimum during