Pakistan's MCQ Practice Library for Competitive Exams

A. supercharging is essential in aircraft engines

B. there can be limited supercharging in petrol engines because of detonation

C. supercharging reduces knocking in diesel engines

D. supercharging at high altitudes is essential

A. all properties of liquid and steam are same

B. specific volume of steam and liquid is same

C. latent heat is zero

D. liquid directly becomes steam

A. axial flow compressors have instability region of operation

C. axial flow compressors have high capacity and efficiency

D. large gas turbines employ axial flow compressors

E. centrifugal compressors are used mainly on low flow pressure ratio gas turbines

A. The gases produced in sludge digestion process, contain 75% methane

B. The process of decomposing the organic matter under controlled anaerobic conditions, is called sludge digestion

D. Sludge digestion is carried out in sludge tank

B. Area of the section

C. Distance of the C.G. of the area from its neutral axis

D. Shear force

A. Septic tanks are generally provided a detention period of 12 to 36 hours

B. Septic tanks are completely covered and high vent shafts are provided for the escape of foul gases

D. Septic tanks are horizontal continuous flow type of sedimentation tanks

A. Ordinary cuttings up to 1 m

B. Surface dressing up to 15 cm depths

C. Surface excavation up to 30 cm depths

A. The distance between the centres of two adjacent rivets in line with the direction of stress shall not exceed 12 t or 203 mm whichever is less in compression members

C. The minimum pitch of rivets should not be less than 2.5 times the diameter of the rivet hole

D. The distance between centres of two adjacent rivets in line with the direction of stress shall not

A. Lime is paid per quintal

B. Cement is paid per 50 kg bag

C. Bricks are paid per thousand

B. All pipes are measured along the centre line of the pipes in metres

C. All pipes and fittings are classified according to their diameters

D. The diameter of the pipes is the nominal diameter of internal bore

A. The maximum rate of storm runoff is called peak drainage discharge

B. The period after which the entire area starts contributing to the runoff, is called the time of concentration

C. Rational method of estimating peak run off, may be used precisely for areas less than 50 hectares

A. Water equivalent height of snow is the height of water column obtained by melting snow

B. The ratio of the up flux and down flux just above the snow surface, is called albedo

D. Spectral albedo of snow is calculated for the semi-infinite snow thickness

A. if the float of an activity is zero, the activity is critical and any delay in its performance will delay the whole project

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. the float may be positive, zero or negative

E. if the float of an activity is negative, delay in its performance is bound to delay the completion of project

A. critical path method is event oriented

C. critical.path method is not activity oriented

D. programmer evaluation and review technique is event oriented

E. programmer evaluation and review technique is not event oriented

A. The gully trap disconnects the sullage drain from the main drainage system

B. The grating provided over gully traps is 23 cm square

D. In a gully trap, a water seal of 6 to 7.5 cm is provided

A. For rivets of nominal diameters less than 25 mm, the diameter of the rivet hole is taken as the nominal diameter of the rivet plus 1.5 mm

B. The diameter of a rivet, before driving is taken as the nominal diameter of the rivet

D. The diameter of the rivet hole is taken as the gross area of the rivet

A. critical path method was invented by Morgan R. Walker of Dupot and James E. Kelley of Remington U.S.A in 1957

C. critical path method avoids delays which are very common in bar chart

D. critical path method provides a realistic approach to the daily problems

E. critical path method is an improvement upon bar chart method

A. critical path method is event oriented

C. critical.path method is not activity oriented

D. programmer evaluation and review technique is not event oriented

E. programmer evaluation and review technique is event oriented

B. Inlets are provided on the road surface at the lowest point for draining rain water

C. Inlets having horizontal openings, are called horizontal inlets

D. Inlets are generally provided at an interval of 30 m to 60 m along straight roads

A. The ratio of the up flux and down flux just above the snow surface, is called albedo

C. Spectral albedo of snow is calculated for the semi-infinite snow thickness

D. Water equivalent height of snow is the height of water column obtained by melting snow