Industrial Engineering - 2 - Mechanical Engineering MCQ

“The liner programming which starts with the optimal solution and infeasible solution, after some successive iteration, it will move to the optimal solution and the feasible” is

A dummy activity is used in PERT network to describe

Follow the symmetrical relation between primal and dual problems, assuming the primal to be a maximization problem,

(a) Number of variables in the primal equal to the number of constraints in the dual.

(b) Less than or equal to constraint in the primal equal to non-negative variable in the dual.

(c) Unrestricted variable in the primal equal to type constraint.

Among the above statements:

NC contouring is an example of

The 10-inch sine bar is used to measure the angularity of the taper on the shaft positioned between two bench centers. The difference in height (H 2 – H 1 ) over the buttons is measured using a Vernier height gauge and a dial test indicator. Calculate the included angle of the taper when H 2 = 6.122 inches and H 1 4.678 inches.

In a 3-wire inspection of metric external thread of M16 × 2, the measurement over the wires were found to be 16.655 mm. Ten the effective pitch diameter of the thread is ……….. mm.

Match List – I with List – II and select the correct answers using the codes given below the lists: List – I

P. CNC
Q. DNS
R. FMS
S. Automatic lathe

List – II

1. Simultaneous control of several machine tools

2. Mass production of a single variety of parts

3. Flexible control of a single machine tool

4. Batch projection of a family of parts

Demand for videotapes of a financial TB program varies uniformly between 500 and 900 copies. The distributor pays Rs. 4 per tape and realizes Rs. 18 income on each sale. Unsold tapes cannot be returned and have no salvage value. Then the optimum stocking level is ___________.

A repairman is to be hired by a company to repair machines whose break-down follow a Poisson process, with an average rate of four per hour. The cost of non-productive machine time is Rs. 90 per hour. The company has the option of choosing either a fast or slow repairman. The fast repairman (F) charges Rs. 70 per hour and will repair machines at an average rate of 7 per hour. While the slow repairman charges Rs. 50 per hour and repairs machines at an average rate of Rs. 6 per hour. Which repairman should be hired?

Demand averages 50 units per week with a standard deviation f 20 units per week; lead time is constant at 1 week (constant lead time with LT < order cycle). Then find the re-order point (ROP) for a service level of 98% from normal curve Z = 2.05 for 48%

Consider the following statements: 1. ABC analysis is based on Pareto’s principal 2. MRP and MPS are the inputs for aggregate planning and control 3. Simulation can be used for inventory control 4. EOQ formula ignores variations in demand pattern

There are five jobs, each of which must go through the two machines A and B in the order AB. Processing times are given below:

Processing time (hours)

By following the sequence procedure, calculate the total idle time for machine A and machine B respectively.

Arrivals at a telephone booth are considered to be Poisson, with an average time of 10 minutes between one arrival and the next. The length of the phone call is assumed to be distributed exponentially, with mean time 3 minutes. Find the probability that an arrival finds that four persons are waiting for their turn.

A farm machinery manufacture has an output rate of 320 hours per week and has measured the load on his shop as follows:

Work in Process:

Current Requirement – 960 hours

Long term orders – 320 hours

Then what is the manufacture lead time?

A company has 3 plants and four ware houses. The supply and demand in units and the corresponding transpiration costs are given

Q.

Choose the correct statement

If the cost for the route B-III is reduced form Rs. 7 to Rs. 6 per unit, what will be the total cost?

The parts are processing on the machines launched into the system in the order of their arrivals