DDA JE Electrical ME 3 April 2023 Shift 2 Part 4
DDA JE Electrical ME 3 April 2023 Shift 2 Part 4
Q.22 A wooden pattern used in the casting process to generate surfaces of revolution in large castings and to prepare moulds out of a paste-like material is known as
1. loose pattern
2. gated pattern
3. sweep pattern
4. match plate pattern
Correct Option: 3
DDA JE Electrical ME 3 April 2023 Shift 2 Part 4
Q.23______is the ratio of the power available at the shaft to the power developed by the runner.
1. Thermal efficiency
2. Ideal efficiency
3. Design efficiency
4. Mechanical efficiency
Correct Option: 4
Q.24 Arc welding is an example of____welding process.
1. forge
2. fusion
3. resistance
4. friction
Correct Option: 2
Q.25_____is a beam which is extended beyond the support.
1. Fixed beam
2. Rigid beam
3. Unstructured beam
4. Overhanging beam
Correct Option: 4
DDA JE Electrical ME 3 April 2023 Shift 2 Part 4
Q.27 Modulus of resilience is defined as the:
1. proof of resilience of a material per unit volume
2. total strain energy stored in a body
3. capacity of a strained body to do work
4. maximum strain energy stored in a body
Correct Option: 1
DDA JE Electrical ME 3 April 2023 Shift 2 Part 4
Q29. Identify whether the following statements about flywheel are correct or incorrect. Statement A: It absorbs mechanical energy by decreasing its angular velocity.
Statement B: It is used to smooth out the flow of energy between a power source and its load.
1. Statement A is correct, but Statement B is incorrect.
2. Both Statement A and Statement B are incorrect.
3. Statement A is incorrect, but Statement B is correct.
4. Both Statement A and Statement B are correct.
Correct Option: 3
DDA JE Electrical ME 3 April 2023 Shift 2 Part 4
Q.30 For a gear, the difference between the space width and the tooth thickness along the pitch circle is known
as
1. face width
2. backlash
3. space width
4. working depth of teeth
Correct Option: 2
Q.31 The defect in casting in which very small holes uniformly dispersed throughout the casting are formed due to decrease in gas solubility during solidification is known as:
1. gas holes
2. blow
3. blister
4. porosity
Correct Option: 4
DDA JE Electrical ME 3 April 2023 Shift 2 Part 4
Q.34 A dual cycle consists of two_____ _____and_____ processes.
1. adiabatic, isobaric heat addition, isochoric heat addition & rejection
2. isentropic, isobaric heat addition, isochoric heat rejection
3. isentropic, isobaric heat addition, isochoric heat addition & rejection
4. adiabatic, isobaric heat addition, isochoric heat rejection
Correct Option: 3
DDA JE Electrical ME 3 April 2023 Shift 2 Part 4
Q.35_____is an example of the second inversion of a double slider-crank chain mechanism.
1. Whitworth quick-return motion mechanism
2. Rotary internal combustion engine
3. Scotch yoke
4. Crank and slotted lever quick-return motion mechanism
Correct Option: 3
Q39. Identify whether the following statements are correct or incorrect.
Statement A: A Carnot heat engine consists of two isentropic and two isothermal processes.
Statement B: The expression § 8W ≤0, is an outcome of the second law of thermodynamics.
1. Statement A is correct, but Statement B is incorrect.
2. Both Statement A and Statement B are incorrect.
3. Statement A is incorrect, but Statement B is correct.
4. Both Statement A and Statement B are correct.
Correct Option: 4
DDA JE Electrical ME 3 April 2023 Shift 2 Part 4
Q.40 In a typical sensitive drilling machine, a and obtains its drive through the pulley.
1. motor
2. hand wheel
3. spindle
4. pillar
Correct Option: 3
DDA JE Electrical ME 3 April 2023 Shift 2 Part 4
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