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SSC JE 2019 - 20 technical Quiz 39

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Question 1

Relative humidity at ADP is:

Question 2

An ideal gas at 270C is heated at constant pressure till the volume becomes three times. The temperature of the gas will then be___.

Question 3

In a steam power plant operating on Rankine cycle, superheated steam enters the turbine with enthalpy 3090 KJ/Kg and exit at condenser pressure of 20 KPa with enthalpy 2130 KJ/Kg. A pump utilizing 5 KJ/Kg of energy is used to pump feedback water. the enthalpy at the exit of the pump is 230 KJ/Kg. the heat rate of the cycle is

Question 4

Which of the following is a line imperfection in a crystal __________?

Question 5

What is the difference in pressure head , measured by a mercury-oil differential manometer for a 20 cm difference of mercury level ? (Sp. Gravity of oil=0.8)

Question 6

Which of the following non – dimensional numbers is used for transition from laminar to turbulent flow in free convection?

Question 7

Hot cracks occur in the weld and fusion zone as the metal solidifies. Which of the following are the causes for hot cracks?
1. Presence of sulphur and phosphorus in the base metal
2. High carbon or alloy content of the base metal
3. Moisture in the joint or electrode
4. Joint restraint
Select the correct answer using the code given below:

Question 8

A 100mm × 5mm steel bar free to expand is heated from 15 °C to 40 °C. What shall be developed?

Question 9

Gear train is required for

Question 10

Match List-I (Type of Anti-friction Bearing) with List-II (Specific Use) select the correct answer using the code given below the lists:
List-I
A). Self-aligning ball bearing
B). Taper roller bearing
C). Deep groove ball bearing
D). Thrust ball bearing
List-II
1). For pure axial load
2). For hinged condition
3). For pure radial load
4). For axial and radial load
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