Pick up the incorrect statement from the following?
(A) an activity of the project is denoted by an arrow on the net work
(B) the tail of the arrow indicates the start of the activity
(C) the head of the arrow indicates the end of,the activity!
(D) the arrows are drawn (to scale from) left to right
(D) each activity consumes a given time
Pick up the correct statement from the following?
(A) the float may be positive, zero or negative
(B) if the float is positive and the activity is delayed by a period equal to its total float, the completion of project in not delayed
(C) if the float of an activity is negative, delay in its performance is bound to delay the completion of project
(D) if the float of an activity is zero, the activity is critical and any delay in its performance will delay the whole project
(D) all of the above
Pick up the correct statement from the following?
(A) critical path method is an improvement upon bar chart method
(B) critical path method provides a realistic approach to the daily problems
(C) critical path method avoids delays which are very common in bar chart
(D) critical path method was invented by Morgan R. Walker of Dupot and James
(D) Kelley of Remington U.S.A in 1957
Which of the following statements is correct ?
(A) All the irreversible engines have same efficiency
(B) All the reversible engines have same efficiency
(C) Both Rankine and Caront cycles have same efficiency between same temperature limits
(D) All reversible engines working between same temperature limits have same-efficiency
(D) Between same temperature limits, both petrol and diesel engines have same efficiency
Pick up the false statement ?
(A) Thermal efficiency of diesel engine i about 34%
(B) Theoretically correct mixture of air am petrol is approximately 15 : 1
(C) High speed compression engines operate on dual combustion cycle
(D) Diesel engines are compression ignition engines
(D) S.I. engines are quality-governed engines
Sulphur content in diesel oil should not be more than_________________?
(A) 10%
(B) 5%
(C) 1%
(D) 0.1%
(D) 0.01%
The efficiency of I.C. engines normally is of the order of_________________?
(A) 15-20%
(B) 20-25%
(C) 25-30%
(D) 30-35%
(D) 35-50%
The firing order in a six stroke I.C. engine is_________________?
(A) 1-3-6-5-2-4
(B) 1-4-2-5-6-3
(C) 1-6-2-5-4-3
(D) 1-5-2-6-3-4
(D) 1-5-3-4-2-6
The specific fuel consumption for a petrol engine first decreases with increase in fuel air ratio and then increases with further increase in fuel air ratio. The minimum value occurs in the range of__________________?
(A) lean mixture
(B) chemically correct mixture
(C) rich mixture
(D) unpredictable
(D) none of the above
The system of lubrication used for motor cycles and scooters is by________________?
(A) forced lubrication system
(B) splash lubrication
(C) applying grease under pressure
(D) wet sump method
(D) mixing about 5% lub oil with petrol