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# Production

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## 45 Questions MCQ Test GATE Mechanical (ME) 2023 Mock Test Series | Production

Production for GATE 2022 is part of GATE Mechanical (ME) 2023 Mock Test Series preparation. The Production questions and answers have been prepared according to the GATE exam syllabus.The Production MCQs are made for GATE 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Production below.
Solutions of Production questions in English are available as part of our GATE Mechanical (ME) 2023 Mock Test Series for GATE & Production solutions in Hindi for GATE Mechanical (ME) 2023 Mock Test Series course. Download more important topics, notes, lectures and mock test series for GATE Exam by signing up for free. Attempt Production | 45 questions in 135 minutes | Mock test for GATE preparation | Free important questions MCQ to study GATE Mechanical (ME) 2023 Mock Test Series for GATE Exam | Download free PDF with solutions
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Production - Question 1

### Consider the figure shown below:- Reason for the aspiration effect is the:-

Detailed Solution for Production - Question 1

Production - Question 2

### Consider the figure shown below. There is a downsprue of length 400mm has a diameter of 30mm at its top end. Height of 96mm of liquid metal is maintained in pouring cup. If aspiration effect is to be avoided, then diameter of downsprue at its lower end is:-

Detailed Solution for Production - Question 2

Production - Question 3

### Riser design with its height equal to diameter is used to feed a casting 20cm × 20cm × 0cm. On solidification, volume shrinkage is 3% and volume of riser is 3 times of shrinkage volume. Height of riser is :-

Detailed Solution for Production - Question 3

Production - Question 4

Casting with dimensions 50cm × 40cm × 10cm size solidifies in 20min. The solidification time for 40cm × 30cm × 5cm casting under similar condition is:-

Detailed Solution for Production - Question 4

Production - Question 5

A sprue for avoiding aspiration to deliver liquid iron at a rate of 20 kg/s. The density of iron is 7800 kg/m3. The height of pouring basin is 9cm. and height of sprue is 25cm. Diameter of sprue base is:-

Detailed Solution for Production - Question 5

Production - Question 6

Cube of side ‘a’ and solid sphere of diameter ‘d’ are made from same material. Ratio of their solidification time is :-;

Detailed Solution for Production - Question 6

Production - Question 7

Shrinkage allowance is made up by :-

Detailed Solution for Production - Question 7

When a hollow cylinder of internal diameter d1 and external diameter d2 is to be cast, then shrinkage allowance is subtracted from d1 and added to d2.

Production - Question 8

Which of the following are the requirements of an ideal gating system?

1. Molten metal should enter mould cavity with as high velocity as possible.

2. It should facilitate complete filling of mould cavity.

3. It should be able to prevent absorption of air or gases from the surroundings by molten metal while flowing through it.

Select the correct answer using codes given below:-

Production - Question 9

Match the following contents of green sand in Group1 with their approximate percentage in Group2

1. Silica                A. 5-10%
2. Clay                 B. 2-5%
3. Bentonite          C. 8-15%
4. Coal Dust          D. 7-8%
5. Water                E. upto 75%

Production - Question 10

Correctly match Group-I and Group-II

Group-I
P. Coal Dust
Q. Dextrin & Molasses
R. Al2O3
S. Wood Flour

Group-II
E. Mould Hardness
F. Hot Strength
G. Surface Finish
H. Collapsibility

Production - Question 11

Common data for 11 & 12

A square plate [60mm × 60mm] is to be cut from a sheet of 1.5mm thickness. Shear strength of the
sheet material is 240 MPa

Q. Size of the punch and the die respectively are

Detailed Solution for Production - Question 11

Production - Question 12

Common data for 11 & 12

A square plate [60mm × 60mm] is to be cut from a sheet of 1.5mm thickness. Shear strength of the sheet material is 240 MPa

Q. If cutting is complete at 60% penetration of the punch. Suitable shear angle for the punch to bring the work within the capacity of 38880 kN is

Detailed Solution for Production - Question 12

Production - Question 13

Barelling is a term associated with which of the following processes

Production - Question 14

If A0 is the initial cross-sectional area of the billet and Af, final crosssectional area of the extruded part, then the reduction ratio is expressed as

Detailed Solution for Production - Question 14

Extrusions ratio is the ratio of the original cross-sectional area of the starting billet to the final cross-sectional area of the extruded part and it is given by

*Answer can only contain numeric values
Production - Question 15

In a rolling operation of mild steel plate, in a single pass the final thickness is reduced to two third of initial thickness. The entrance speed is 14 m/min and roll diameter is 450mm. If the plate width is increased by 2.5% during the operation. The exit velocity is ___ m/min.

(Important - Enter only the numerical value in the answer)

Detailed Solution for Production - Question 15

Production - Question 16

In rolling operation, the power required varies.

1) Directly proportional to the roll gap

2) Inversely proportional to the roll gap

3) Directly proportional to the roll force

4) Directly proportional to roll speed

Which of the statements are true

Detailed Solution for Production - Question 16

Production - Question 17

Which one of the following is a heat treatment process for surface hardening?

Production - Question 18

A copper strip of 200mm width and 30mm thickness is to be rolled to a thickness of 25mm. The roll of radius 300mm rotates at 100rpm. The average shear strength of the work material is 180Mpa. The roll strip contact length and the roll force are

Production - Question 19

A solid cylinder of diameter 1000mm and height 50mm is forged between two friction-less flat dies to a height of 25 mm.
The percentage change in diameter is

Detailed Solution for Production - Question 19

Production - Question 20

Using direct extrusion process, a round billet of 100mm length and 50mm diameter is extruded. Considering an ideal deformation process (no friction and no redundant work) extrusion ratio 4 and average flow stress of material 300 MPa, the Pressure (MPa) on the ram will be

Detailed Solution for Production - Question 20

Production - Question 21

Which one of the following statements regarding the formation of continuous chips is incorrect?

Detailed Solution for Production - Question 21

Large rake angle and high cutting speeds are desirable for formation of continuous chips.

Production - Question 22

Production - Question 23

14-A drill bit of 20mm diameter rotating at 500 rpm with a feed rate of 0.2 mm/revolution is used to drill a through hole in Mild Steel plate of 20mm thickness. The depth of cut in this drilling operation is

Production - Question 24

Common data for 24 & 25

During orthogonal cutting process, following data have been observed:-

Q. Value of shear plane angle is:-

Production - Question 25

Common data for 24 & 25
During orthogonal cutting process, following data have been observed:-

Q. Friction angle is given by:-

Detailed Solution for Production - Question 25

Production - Question 26

In orthogonal cutting operation, rake angle is 150 and coefficient of friction is 0.5. Using Merchant’s theory, that will be the percentage change in chip thickness if friction is doubled?

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Production - Question 27

In orthogonal cutting of MS tube with HSS tool, cutting speed and rake angle are 15m/min and 150. Chip thickness ratio is 0.35. Friction force and coefficient of friction are 470N and 0.6 respectively. Value of cutting force is:-

Detailed Solution for Production - Question 27

Production - Question 28

Which of the following is correct regarding Built-up Edge?

Production - Question 29

A carbide tool workpiece was found to have life of 3 hours while cutting mild steel workpiece, at the speed of 60m/min. The Taylor’s exponent used be n = 0.3. If the same tool is used at speed 30% higher than the previous one, then the new tool life will be

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Production - Question 30

Which of the following statements is correct:-

Production - Question 31

Which of the following welding processes results in least heat affected zone near the weld bead

Detailed Solution for Production - Question 31

In electron beam welding, as the electron beam is concentrated form of energy, HAZ is minimum.

Production - Question 32

Consider the following statements

I) Strength of weld bead is greater than the strength of parent metal.

II) By increasing the welding speed, heat affected zone increases.

III) At the centre of weld pool and towards the heat affected zone the grain structure is coarser and finer
respectively

IV) As the carbon percentage in steels increases, the weldability is increased.

Which of the above statements is/are correct

Detailed Solution for Production - Question 32

By increasing welding speed, heat affected zone decreases as parent metal is sunjected to high temperature for less time.

At the centre of weldpool due to low cooling rate coarser grain structure will be produced and towards the heat affected zone due
to higher cooling rate finer grain structure of weld bead will be produced.

Weldability
Mild Steel > Medium Carbon steel
> High Carbon Steel > Alluminium

Production - Question 33

TIG welding is specificaly used to weld alluminium alloys because:

Detailed Solution for Production - Question 33

TIG welding setup was specificaly invented to weld alluminium alloy because due to oxide layer formation the weldability of Al is
very poor.
To weld Al workpiece is connected with negative terminal and electode is connected to positive terminal and as electrons are coming out from negative terminal (workpiece), the oxide layer over
the workpiece will peel off.

Production - Question 34

Consider the following statements

I) Brazing takes place below 4500C

II) Zinc chloride is used as flux in soldering

III) Brass is used as a filler material in brazing

IV) Main principle in soldering and brazing is capillary action.

Which of the statements is/are correct

Detailed Solution for Production - Question 34

Production - Question 35

To control the heat treatment of the weld bead in arc weldig which of following is helpful.

Detailed Solution for Production - Question 35

Since flux has lower density as compared to liquid metal, it will float and forms a layer of slag over the bead. The slag coating has three important functions.

1) It protects the bead from attack of atmospheric gases

2) It controls the heat treatment of bead

3) It provides alloys to bead.

*Answer can only contain numeric values
Production - Question 36

Two rods of diameter 50mm each are joined by flash butt welding. At interface 1.5mm of material melt from each rod which has resistance of 38.6?. If the melting energy is 54 MJ/m3 and and the time required
for melting is 8 seconds. The supply voltage for the process is _____ volts

(Important - Enter only the numerical value in the answer)

Detailed Solution for Production - Question 36

Production - Question 37

A calorically perfect gas (specific heat at constant pressure 1000 J/kg.K) enters and leaves a gas turbine with the same velocity. The temperatures of the gas at turbine entry and exit are 1100 K and 400 K. respectively. The power produced is 4.6 MW and heat escapes at the rate of 300 kJ/s through the turbine casing. The mass flow rate of the gas (in kg/s) through the turbine is.

*Answer can only contain numeric values
Production - Question 38

In an arc welding process the melting efficiency and heat transfer efficiency are 45% and 75% respectively. The area of the weld crossection is 6mm2 and unit energy required to melt the material is 12J/mm3. If welding power is 2.5 kW.
The welding speed is _____mm/s

(Important - Enter only the numerical value in the answer)

Detailed Solution for Production - Question 38

*Answer can only contain numeric values
Production - Question 39

If the thermal efficiency of the process is 65%. The net heat input per unit length of weld is ___kJ/cm

(Important - Enter only the numerical value in the answer)

*Answer can only contain numeric values
Production - Question 40

The crossection area of the weld is _____mm2.

(Important - Enter only the numerical value in the answer)

Detailed Solution for Production - Question 40

Production - Question 41

During the execution of a CNC part program block N010 G00 X45.0 Y20.0. The type of tool motion will be

Production - Question 42

The following CNC part program block is written to create an arc N010 G20 G91 X5 Y-5 IO J5. The arc radius is

Production - Question 43

Which among the NC operations given below are PRP control maching? TIG Welding (TW), Turning (T), Drilling (D) Punching in sheet Metal (P), Laser cutting of sheet metal (LC) Spot Welding (SW)

Production - Question 44

The tool of an NC machine has to move along a circular arc from (5, 5) to (10, 10) while performing an operation. The center of the arc is at (10, 5). Which one of the following NC tool path commands performs the above mentioned operation?

Production - Question 45

Match the following

## GATE Mechanical (ME) 2023 Mock Test Series

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