All of the following give Beta and Gamma radiations EXCEPT:
A.Iridium 192
B.Iodine 131
C.Cobalt 60
D.Polonium 210
Category: Mechanical Engineering Mcqs
Safety valve used on locomotive boilers is generally of
A.Dead weight type
B.Indirect dead weight type
C.Spring balanced type
D.Lever load type
E.Spring type
Rankine cycle efficiency for a power plant is 29.6%. The Carnot cycle efficiency will be
A.Equal to Rankine cycle efficiency
B.More than Rankine cycle efficiency
C.Less than Rankine cycle efficiency
D.There is no comparison for the two
E.None of the above
A beater machine in a pulp mill is driven by a 50 H.P. motor using 6 vee belts of D section. If one of the belt breaks after a month
A.All the belts have to be replaced
B.Broken belt may be replaced by the similar etc
C.Broken belt and at least one adjacent belt should be replaced
D.Broken belt and at least two adjacent belt should be replaced
E.None of the above
A rope sheave of balance weight for the cage is supported on an axle 25 cm. The maximum tension in the rope is 1500 kg. For safe design the point of application of the load should be considered at
A.End points
B.Middle of span
C.Anywhere along the span
D.Case should be analysed for various positions of load along the span
E.Data should be taken from hand books
Which of the following lamp in a car will have the least wattage
A.Head light bulb
B.Stop light bulb
C.Flasher bulb
D.Parking light bulb
E.Ignition warning light
The material used in the construction of a thermistor is
A.Nickel oxide
B.Iron oxide
C.Nickel
D.None of the above
If a closed circuit is made of two dissimilar metals, an electric current flows in the circuit whdn the two junctions are maintained at different temperatures. This phenomenon is known as
A.Peltier effect
B.Seeback effect
C.Thomson effect
D.Maxwell’s effect
E.Faraday’s effect
The ratio of sensible heat to total heat is known as
A.Dew point
B.Humidification ratio
C.Relative humidity
D.Specific humidity
E.Sensible heat factor
