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NLC Technical Quiz 3
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Question 1
In case of free vibration with viscous damping, the damping force is proportional to
Question 2
A helical compression spring is to be designed for a force of 200N. The spring index of the spring, if mean coil diameter is 48 mm and wire diameter is 9.6 mm.
Question 3
The ratio of the Euler’s critical buckling load for a slender column fixed at both the ends and other column with one end fixed and the other end hinged is
Question 4
Match List-| (Type of thermometer) with List-|| (Thermometric property) and select the correct answer using the code given below the lists:
List-|
A) Mercury in glass
B) Thermocouple
C) Thermistor
D) Constant Volume gas
List-||
1) Pressure
2) Electrical resistance
3) Volume
4) Induced electric voltage
List-|
A) Mercury in glass
B) Thermocouple
C) Thermistor
D) Constant Volume gas
List-||
1) Pressure
2) Electrical resistance
3) Volume
4) Induced electric voltage
Question 5
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
Question 6
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 7
Which one of the following statements is correct for reciprocating air compressor?
Question 8
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
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ESE & GATE MEGeneralNov 11ESE & GATE ME
