List of top Production Engineering (Manufacturing) Questions

The computer centre (CC) in an institute manages the central server for which researchers queue to run their computer programs. CC processes programs only one at a time. Four computer programs are available at 10:00 am on a given day. The time required to run each program on the central server and their respective promised time of completion (i.e., due date) on that same day are given in the table.

Program	1	2	3	4
Processing time (in minutes)	60	40	90	100
Promised time (i.e., due date)	12 noon	11:30 am	1:00 pm	1:30 pm

If the CC follows shortest processing time (SPT) rule to sequence the computer programs, then number of tardy jobs is ______.

Note: Ignore program change-over times.

Which ONE or MORE among the options given is/are well established format(s) of data transfer used in geometrical modelling related to computer aided design (CAD)?

In a direct current arc welding, the voltage \( V \) (in volt) is related to the arc length \( l \) (in cm) as \[ V = 30 + 30l. \] The open circuit voltage is 80 volts. The maximum possible arc length is ............. (Rounded off to two decimal places)

A plate of 30 mm thickness is fed through a rolling mill with two powered rolls. Each roll has a diameter of 500 mm. The plate thickness is to be reduced to 27 mm in a single pass. Assume no change in width. The process feasibility and the maximum draft (in mm) can be represented, respectively, as

In a direct current arc welding, the voltage \( V \) (in volt) is related to the arc length \( l \) (in cm) as \[ V = 30 + 30l. \] The open circuit voltage is 80 volts. The maximum possible arc length is ............. (Rounded off to two decimal places)

Exit-hole occurrence is common in:

Which among the following is/are TRUE for friction stir welding (FSW) process?

To create 12 divisions on a disc by using simple indexing and dividing head on a horizontal milling machine, choose the correct option for the rotation of the crank pin.

Which one of the following pure metals has the hexagonal close packed (HCP) crystal structure at room temperature?

Strength of the tool cutting edge in orthogonal cutting in comparison to that of the oblique cutting is:

The hole of size \(30.000\;\overset{\displaystyle +0.060}{0.000} \text{ mm}\) match with the shaft of size \(30.000\;\overset{\displaystyle +0.010}{0.000} \text{ mm}\) is on interchangeable arrangement. The assembly's maximum allowable clearance will be:

Match List I with List II

List I		List II
A.	Line of action lying on the same line.	I	Parallel forces
B.	Lines of action parallel to each other.	II	Concurrent
C.	Lines of action intersecting at a point.	III	Non-Coplanar forces
D.	Lines of action lying on different planes or in space.	IV	Collinear forces

Choose the correct answer from the options given below:

Read the following statements for some properties:
(A) Pressure is an extensive property.
(B) Specific internal energy is intensive property.
(C) Enthalpy is extensive property.
(D) Temperature is intensive property.
(E) Specific heat is intensive property.
Choose the correct answer from the options given below:

Match List I with List II

List I		List II
A.	Double, slides cranks mechanism	I	Pantograph
B.	Four bar chain	II	Elliptical trammel
C.	Single slider crank mechanism	III	Hip joint
D.	Spherical joint	IV	White worth quick returns mechanism

Choose the correct answer from the options given below:

In a 2-DOF (RP) manipulator, the joint link parameters are given as

Link i	a_i	\(\alpha_i\)	d_i	\(\theta_i\)
1	0	\(90\degree\)	0	\(\theta_1\)
2	0	0	d₂	0

The final transformation matrix for this manipulator is S

A casting defect formed, when two stream of liquid metal meet without complete fusion is known as:

A typical two-cycle spark-ignition engine uses the crankcase as an air pump to compress the air/fuel mixture. Which of the following is/are not related to spark ignition engine :

Match List I with List II
Physical Principles of Continuously Variable Transmission (CVT)

List I (Type of CVT)		List II (Principle of Energy)
A.	Hydrodynamic	I.	Hydrostatic forces at pump and motor
B.	Mechanical	II.	Electromagnetic forces at generator motor
C.	Hydrostatic	III.	Mass forces at pump and turbine
D.	Electrical	IV.	Traction forces at pump and motor

Choose the correct answer from the options given below :

Which of the following is not an advantage of farm mechanization -

The penetration power of a disc harrow can be manipulated by :

Which of the following two types of cylinders are used on power wheat threshers :-

The statement, which is true, is/are?
(A) Elastic body has infinite degrees of freedom.
(B) A universal joint can be used to connect two parallel shaft only.
(C) Pantograph is an inversion of tour bar kinematic chain.
(D) A rigid body does not suffers any distaction under the action of external forces.
(E) A structure transmits forces resulting in finite amount of work.
Choose the correct answer from the options given below:

Match List I with List II

List I		List II
A.	Displacement Sensor	I	Tactile Sensor
B.	Velocity Sensor	II	Potentiometer Sensor
C.	Force Sensor	III	Incremental Sensor
D.	Fluid Pressure Sensor	IV	Strain gauge load cell

Choose the correct answer from the options given below:

The relation which is applicable for rotation of frame in fixed angle representation is:

Choose the correct order for assigning frame (i) to link (i) from the given options:
(A) Z_i-axis is aligned with axis i, its direction being arbitrary.
(B) Y_i-axis completes right-hand orthonormal coordinate frame (i).
(C) Origin of i^th coordinate frame is located at the intersection of axis of joint (i+1) and the common normal between axis (i-1) and (i).
(D) X_i-axis is perpendicular to axis Z_i-1 and Z.
(E) X_i points away from axis Z_i-1.
Choose the correct answer from the options given below: