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GATE 2022 Rapid Revision Weekly Quiz 7
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Question 1
The Reynolds number of a fluid flowing over a flat plate at a distance of 16 cm from the leading edge is 25600. The thickness of the boundary layer at this point will be
Question 2
Which one of the following statements is correct for reciprocating air compressor?
Question 3
The change of bending moment w.r.t distance is equal to _______.
Question 4
If Equation 2j-3>m , where ‘ j’ is number of joints, ‘m’ is no of members , frame is a ______.
Question 5
Select the correct options by matching?
Group 1
I) Froude number
II) Weber number
III) Euler number
IV) Grashof number
Group 2
A) Local acceleration to heat transfer
B) Inertial force to gravity force
C) Inertial force to pressure force
D) Thermal buoyancy force to viscous force
E) Inertial force to surface tension
Group 1
I) Froude number
II) Weber number
III) Euler number
IV) Grashof number
Group 2
A) Local acceleration to heat transfer
B) Inertial force to gravity force
C) Inertial force to pressure force
D) Thermal buoyancy force to viscous force
E) Inertial force to surface tension
Question 6
Water-tube boilers are preferred for
Question 7
For a fluid flowing over a flat plate, the Nusselt number at a point 0.5 m from the leading edge is 100. If the thermal conductivity of the fluid is 0.025 W/mK, the coefficient of convective heat transfer is
Question 8
Match List-I with List-II and select the correct answer using the code given below the lists:
List-I
A) Radiation heat transfer
B) Conduction heat transfer
C) Forced convection
D) Transient heat flow
List-II
1) Fourier number
2) Wien’s displacement law
3) Fourier law
4) Stanton number
Question 9
A reversible engine operates between temperatures 900 k and T2(T2 < 900K) and another reversible engine between T2 and 400 K (T2>400 K) in series. The value of T2 if work outputs of both the engines are equal is
Question 10
The process of making hollow castings of non-circular shape and desired thickness by permanent mould without the use of cores is known as ____.
Question 11
In Ammonia-water VARS, water acts as
Question 12
The following readings refer to a vapour compression refrigerator:
The enthalpy per kg of refrigerant flow, from p-h chart
at inlet to compressor – 1500 kJ/kg
at outlet to compressor – 1700 kJ/kg
at exit of condenser – 300 kJ/kg
The COP of the refrigerator is
The enthalpy per kg of refrigerant flow, from p-h chart
at inlet to compressor – 1500 kJ/kg
at outlet to compressor – 1700 kJ/kg
at exit of condenser – 300 kJ/kg
The COP of the refrigerator is
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