there is a pressure drop in the nozzle
fluid flows through the nozzle
pressure drops and fluid flows through the nozzle
there is no pressure d
✅ The correct answer is option D.
Engineering MCQs
Which of the following formula is used in designing a connecting rod ?
Euler’s formula
Rankine’s formula
Johnson’s straight line formula
Johnson’s parabolic fo
✅ The correct answer is option B.
When the shaft rotates in anticlockwise direction at slow speed in a bearing, it will
have contact at the bottom most of the bearing
move towards right of the bearing making the metal to metal contact
move towards right of the bearing making no metal to metal contact
move towards left of t
✅ The correct answer is option D.
Two shafts of the same length and material are joined in series. If the ratio of their diameters is 2, then the ratio of their angles of twist will be
2
4
8
16
✅ The correct answer is option D.
In an extensive property of a thermodynamic system
extensive heat is transferred
extensive work is done
extensive energy is utilised
none of these
✅ The correct answer is option D.
During sensible cooling,
relative humidity remains constant
wet bulb temperature increases
specific humidity increases
partial pressure of va
✅ The correct answer is option D.
A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with cp = 1 kJ/kg)
25 kJ/kg
50 kJ/kg
l00 kJ/kg
125 kJ/kg
✅ The correct answer is option B.
The flow in a pipe is turbulent when Reynold number is
less than 2000
between 2000 and 2800
more than 2800
none of these
✅ The correct answer is option C.
A Pelton wheel develops 1750 kW under a head of 100 metres while running at 200 r.p.m. and discharging 2500 litres of water per second. The unit discharge of wheel is
0.25 m3/s
0.5 m3/s
1.5 m3/s
2.5 m3/s
✅ The correct answer is option A.
Cutting fluid has no effect on the tool life.
TRUE
FALSE
✅ The correct answer is option B.