A. peroxides, aldehydes and ketones
B. peroxides, aldehydes, oxides and sul-phides
C. aldehydes, oxides and ketones
D. ketones and sulphur compounds
E. none of the above
Mechanical Engineering Mcqs
Mechanical Engineering Mcqs for Preparation of Job Test and interview, freshers, Students, competitive exams etc. Multiple choice questions here are on topics such as Machine Design, Theory of Machines, Hydraulic Machines etc.
A. inject fuel in cylinder
B. supply fuel when carburettor fails
C. pump fuel so that it reaches carburettor (to improve thermal efficiency)
D. does not exist
A. higher
B. lower
C. same
D. depends on size of engine
E. unpredictable.
A. 0.1 to 0.2 mm
B. 0.2 to 0.4 mm
C. 0.45 to 0.6 mm
D. 0.6 to 0.8 mm
E. 0.8 to 1 mm
A. 0.001 sec
B. 0.002 see
C. 0.01 sec
D. 0.05 sec
E. 0.1 sec
A. minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame
B. temperature at which it solidifies or congeals
C. that at which it catches fire without external aid
D. indicated by 90% distillation temperature, i.e., when 90% of sample oil has distilled off
E. indicated by 50% distillation temperature
A. 30 – 65°C
B. 65 – 220°C
C. 220-350°C
D. 350-450°C
E. 450-550°C
A. 150°C
B. 240°C
C. 370°C
D. 450°C
E. more than 500°C.
A. iso-octane
B. mixture of normal heptane and iso-oc-tane
C. alpha methyl napthalene
D. mixture of methane and ethane
E. mixture of paraffins and aromatics
A. to increase the octane rating of the fuel
B. to increase the cetane rating of the fuel
C. as a defrosting agent
D. as a superior type of fluid compared to others
E. to improve lubricating quality of fuel
