DDA JE Electrical ME 3 April 2023 Shift 3 Part 4

Q.21____is an example of the third inversion of a double slider-crank chain mechanism.

1. Crank and slotted lever mechanism
2. Whitworth quick-return motion mechanism
3. Rotary internal combustion engine
4. Oldham’s coupling

Correct Option: 4

Q.24 In spark-ignition engines, with combustion.
maximum temperature is attained at
mixture during

1. no dissociation; lean
2 dissociation; stoichiometric
3. no dissociation; stoichiometric
4. dissociation; lean

Correct Option: 3

DDA JE Electrical ME 3 April 2023 Shift 3 Part 4

Q.25 Lathes that do NOT have tailstocks are called

1. chucking machines
2. tracer lathes
3. bench lathes
4. bar machines

Correct Option: 1

Q.27 Which of the following pumps comes under the category of dynamic pumps?

1. Sliding vane
2. Axial flow
3. Gear
4. Screw

Correct Option: 2

DDA JE Electrical ME 3 April 2023 Shift 3 Part 4

Q.28 The type of sand mould in which a synthetic liquid resin is mixed with sand and the mixture hardens at room temperature is known as

1. hot-box
2. no-bake
3. cold-box
4. green-sand

Correct Option: 2

Q.29 Bernoulli’s equation can be obtained by single scalar integral of

1. Euler’s equation
2. the continuity equation
3. the Darcy-Weisbach equation
4. the momentum equation

Correct Option: 1

Q.32 Based on the following two statements on laminar and turbulent flows, select the correct answer.
Statements:
A) In a laminar flow, the fluid particles move along smooth paths in a predictable manner.
B) In a viscous turbulent flow, the motion of an individual fluid particle is not predictable.

1. Both statements A and B are correct.
2. Statement A is incorrect, but statement B is correct.
3. Statement A is correct, but statement B is incorrect.
4. Both statements A and statement B are incorrect.

Correct Option: 1

DDA JE Electrical ME 3 April 2023 Shift 3 Part 4