Related Questions

The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure, is called
A Humidity ratio
B Relative humidity
C Absolute humidity
D Degree of saturation
Accurate measurement of productivity in the service sector is really a complex task, For example, postal workers/often said to be more productive if more letters are delivered per postal worker, But is this really true? What if more letters are lost or delayed per worker at the same time that more are delivered? The doubt raised about in relation to measuring productivity in service sector is based on which of the following propositions?
A The quality of service is often ignored in measuring productivity
B Postal sector is perfect example of the service sector.
C An effort to measure productivity of the service workers is nothing but wastage of time.
D The delivery of letters is the primary activity of postal service
The volume of air delivered in a medium capacity air compressor per unit time is
A 0.1 to 1.2 m3/s
B 0.15 to 5 m3/s
C Above 5 m3/s
D None of these
In a compressor, free air delivered is the actual volume delivered at the stated pressure reduced to
A N.T.P. conditions
B Intake temperature and pressure conditions
C 0°C and 1 kg/cm2
D 20°C and 1 kg/cm2
The work done per unit mass of air in compression will be least when 'n' is equal to
A 1
B 1.2
C 1.3
D 1.4
Heat conducted through per unit area and unit thick face per unit time when temperature difference between opposite faces is unity, is called
A Thermal resistance
B Thermal coefficient
C Temperature gradient
D Thermal conductivity
Six men can complete a work in 5 days if they work for 8 hours per day. How many days will 4 men take to do the same work if they work only 5 hours per day?
A 12
B 16
C 24
D 32
The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called
A Humidity ratio
B Relative humidity
C Absolute humidity
D Degree of saturation
A flywheel is fitted to the crankshaft of an engine having W as the amount of indicated work per revolution and permissible limits of coefficient of fluctuation of energy and speed as CE and CS respectively. The kinetic energy of the flywheel is given by
A 2WCE/CS
B WCE/2CS
C WCE/CS
D WCS/2CE
A single pass air heater is connected to a two pass unit. For the air flow rate and other conditions remaining the same, the film heat transfer co-efficient for air will vary in the ratio of
A 2
B 20.8
C 20.2
D 20.5

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