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## Marks 1

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Which one of the following statement is TRUE?
GATE ME 2017 Set 2
Which one of the following is NOT a rotating machine?
GATE ME 2017 Set 1
The blade and fluid velocities for an axial turbine are as shown in the figure. The magnitude of absolute velocity at e...
GATE ME 2016 Set 3
Consider two hydraulic turbines having identical specific speed and effective head at the inlet. If the speed ratio \$\$\l...
GATE ME 2016 Set 1
Kaplan water turbine is commonly used when the flow through its runner is
GATE ME 2014 Set 4
In order to have maximum power from a Pelton turbine, the bucket speed must be
GATE ME 2013
A phenomenon is modeled using \$\$n\$\$ dimensional variables with \$\$k\$\$ primary dimensions. The number of non-dimensional v...
GATE ME 2010
A hydraulic turbine develops \$\$1000\$\$ \$\$kW\$\$ power for a head of \$\$40\$\$ \$\$m.\$\$ If the head is reduced to \$\$20\$\$ \$\$m,\$\$ t...
GATE ME 2010
Match the items in columns \$\$I\$\$ and \$\$II\$\$. Column \$\$I\$\$ \$\$P:\$\$ Centrifugal compressor \$\$Q:\$\$ Centrifugal pump \$\$R:\$\$ P...
GATE ME 2007
A model of a hydraulic turbine is tested at a head of \$\$1/{4^{th}}\$\$ of that under which the full scale turbine works. T...
GATE ME 2007
The inlet angle of runner blades of a Francis turbine is \$\${90^0}.\$\$ The blades are so shaped that the tangential compon...
GATE ME 2007
A horizontal shaft centrifugal pump lifts ware at 65°C. The suction nozzle is one meter below pump centerline. The press...
GATE ME 2006
A large hydraulic turbine is to generate \$\$300\$\$ \$\$kW\$\$ at \$\$1000\$\$ \$\$rpm\$\$ under a head of \$\$40\$\$ \$\$m\$\$. for initial te...
GATE ME 2006
In a Pelton wheel, the bucket peripheral speed is \$\$10\$\$ \$\$m/s,\$\$ the water jet velocity is \$\$25\$\$ \$\$m/s\$\$ and volumetri...
GATE ME 2006
At a hydro electric power plant site, available head and flow rate are \$\$24.5\$\$ \$\$m\$\$ and \$\$10.1{m^3}/s\$\$ respectively. ...
GATE ME 2004
A centrifugal pump is required to pump water to an open water tank situated \$\$4\$\$ \$\$km\$\$ away from the location of the p...
GATE ME 2004
If there are \$\$'m'\$\$ physical quantities and \$\$'n'\$\$ fundamental dimensions in a particular process, the number of non-...
GATE ME 2002
Kaplan turbine is
GATE ME 1997
In terms of speed of rotation of the impeller \$\$N\$\$, discharge \$\$Q\$\$ and a change in total head \$\$H\$\$, through the machi...
GATE ME 1994

## Marks 2

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Water having a density of \$\$1000\,\,kg/{m^3},\$\$ issues from a Nozzle with a velocity of \$\$10\$\$ \$\$m/s\$\$ and the jet strik...
GATE ME 2008
Specific speed of a Kaplan turbine ranges between
GATE ME 1993
Cavitation in a hydraulic reaction turbine is most likely to occur at the turbine
GATE ME 1993

## Marks 5

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A water turbine delivering \$\$10\$\$ \$\$MW\$\$ power is to be tested with the help of a geometrically similar \$\$1:8\$\$ model, w...
GATE ME 1997
In a hydroelectric station, water is available at the rate of \$\$175{m^3}/s\$\$ under a head of \$\$18m.\$\$ The turbines run a...
GATE ME 1996
A Hydro turbine is required to give \$\$25\$\$ \$\$MW\$\$ at \$\$50\$\$ \$\$m\$\$ head and \$\$90\$\$ \$\$rpm\$\$ runner speed. The laboratory f...
GATE ME 1992
A \$\$7MW\$\$ hydro turbine working under a head of \$\$10\$\$ \$\$m\$\$ at a rotational speed of \$\$125\$\$ \$\$rpm\$\$ is to be designed...
GATE ME 1991
Identify the type of turbo machinery for the following case. Specify the reasons. Power developed \$\$=430\$\$ \$\$kW;\$\$ Oper...
GATE ME 1990

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