Biman Bangladesh Airlines ltd. (13th July 2018)
MCQ:
1. CAAB- founder 1985
2. ICAO - International Civil Aviation Organization
3. Caan festivals 2018 award- Plame d’Or winner : Shoplifters
4. 2018 FIFA world cup football name- Telstar 2018
5. Writer of “ The Old man & The sea” Ernest Hemingway
6. Present UN president is from which country : Portugal
7. Many computers are connected to a common computer : Star technology
8. USB : Universal Serial Bus
9. What kind of device is scanner : Input Device
10. Primary function of BIOS : Save OS
11. 2, 3,5,7 are : prime numbers
12. product of two consecutive number can be written as: n2+n
13.
can be also
expressed as :
14. 4x+1= 32, then find x ? x= 3/2
Departmental Question:
1. A 4 cylinder petrol engine has developed MEP=650 KPa, it's
engine dia is 80 mm, stroke length is 100 mm, speed 3000 rpm. Find engine power
in KW ?
2. For counter flow heat exchanger Th1=160℃, Th2=125℃,
Tc1=20℃, Tc2=80℃ , Draw temperature distribution curve.
Also Find arithmetic mean temperature difference & logarithmic mean
temperature difference.
3. A wire has got dia of 20 mm, if heat transfer co efficient
is 20 W/m2.K and thermal Conductivity is 0.5W/m.k. then find the
distance at which maximum heat dissipation will occur.
4. A 1.5m×1.5m×2m tank is kept at 11m above from the ground.
If a pump installed on ground having efficiency of 60% can fill the tank in 30
min then , find the required pump power.
5. Show that , specific speed of pump is a dimensionless
number.
6. Draw P-V & T-S diagram of otto & diesel cycle and
write down the corresponding process name.
7. Find the absolute pressure in Pa of 100mm mercury vacuum
pressure
8. Engine power developed 40KW, solid shafts rpm 200 , if the
shaft dia is 40 mm then find maximum torsional stress developer in the shaft.
9. Find the deflection of a solid circular steel bar having
load 500 kg, lenght 2.5 m, dia 60mm & E=200 GPa
10. Draw block diagram & T-S diagram for gas- steam
combine cycle power plant.
11. A 60 mm metal ball at 220℃ is being cooled by air jet of
20℃, heat transfer co-efficient 200 W/m.k & 100 W/m2.K, if the
specific heat of the metal ball 400 J/Kg.K, density 9000Kg/m3, find
the temperature of the ball after 90 sec.
12. An aeroplane makes a complete half circle of 50 metres
radius, towards left,when flying at 200 km per hr. The rotary engine and the
propeller of the plane has a mass of 400 kg and a radius of gyration of 0.3 m.
The engine rotates at 2400 r.p.m. clockwise when viewed from the
rear. Find the gyroscopic couple on the aircraft.
13. In a vapor compression refrigeration cycle inlet
condenser enthalpy is 283 KJ/Kg, exit condenser enthalpy is 116 KJ/Kg, exit
evaporator enthalpy is 232 KJ/Kg, Find COP.
14. Draw all necessary orthrogrphic views of the following
objects.
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