Related Questions

The maximum torque multiplication ratio in a torque converter is about
A 2.5
B 10
C 25
D 40
The pump impeller and the turbine runner in a hydraulic torque converter
A Have the same diameter
B Have different diameters
C Are directly coupled
D None of these
________ has the least value of starting torque to full load torque ratio.
A D.C. shunt motor
B D.C. series motor
C Squirrel cage induction motor
D Slip ring induction motor
The scales form in heat exchanges after a period of operation and provide additional resistance to heat transfer with some heat transfer coefficient . The reciprocal of this scale heat transfer coefficient is called .
A scaling factor
B forming factor
C resisting factor
D fouling factor
Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the
A Surrounding temperature
B Average temperature of the fin
C Temperature of the fin end
D Constant temperature equal to that of the base
The ratio of starting torque to full-load torque is least in case of
A Series motors
B Shunt motors
C Compound motors
D None of the above
Which of the following load normally needs starting torque more than the rated torque?
A Blowers
B Conveyors
C Air compressors
D Centrifugal pumps
The ratio of starting torque to running torque in a synchronous motor is
A zero
B one
C two
D infinity
Jack has b blueberries. He uses 30 percent of the blueberries to make muffins , each of which requires m blueberries. He uses the rest of the rest of the blueberries to make pies, each pie of which retires p blueberries. which of the following describes the number of blueberry pies Jack can make ?
A 3b/10m
B 3b/10p
C 7b/10m
D 7b/10p
Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of
A Lumps
B Pellets
C Briquettes
D Sinter

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