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NLC Technical Quiz 40
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Question 1
A power plant, which uses a gas turbine followed by steam turbine for power generation, is called
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
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 4
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 5
If the blades of the axial flow turbine are fixed, these are called
Question 6
A cross flow type air heater has an area of 50 m2. The overall heat transfer coefficient is 100 W/m2 K and heat capacity of both hot and cold stream is 1000 W/ K. The value of NTU is
Question 7
A spring having 30 coils and stiffness K is cut into 3 equal parts and arranged them in parallel combination. What will be the effective stiffness of the new system?
Question 8
The slenderness ratio for long columns is:
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ESE & GATE MEGeneralOct 8ESE & GATE ME
