
Test/Date
and Time 
Semester/year 
Course/Course Code 
Max Marks 

Ex: I test/6 ^{th} weak of sem 1011 Am 
VI
SEM 
ESTIMATION
& COSTINNG 
20 

Year: 201617 
Course
code:15ME61T 

Name
of Course coordinator : Units:1,2 Co:
1,2 Note: Answer all questions 

Question no 
Question 
MARK
S 
CL 
CO 
PO 

1 
Define estimation. List the aims of estimating 
05 
U 
01 
2 

2 
Name the
various components of cost. Give brief descriptions of the component. 
05 
R 
02 
2 

3 
A machine was purchased for Rs 30000/. The cost of erection charges
was Rs 10000/ , the estimated life of the machine was 20 years. The scrap
value at the end of useful life was Rs 8000/. Determine the rate of
depreciation per year by straight line method. After 10 years the machine
underwent major repairs and the repair cost was Rs 6000/ .What will be the
new rate of depreciation per year. 
10 
A 
01 
1,2 

MODEL
QUESTION PAPER
VI
Semester Diploma Examination Course Title: ESTIMATION
& COSTINNG
Time: 3 Hours] [Max
Marks:
100
Note: Answer any SIX from Part A and any SEVEN from Part B
PARTA 6x5=30 marks
1.
Define estimation. Mention the aims of estimating
2. Explain
the Straight line method of calculating depreciation
3. Name
the various components of cost. Give brief descriptions of the component.
4. Distinguish
between fixed and variable overhead
5. Define cutting
speed, feed, depth of cut for lathe operations
6. Explain the Procedure of estimating cost
of machined part
for Lathe operations
7. Explain the
various operation time to be considered for estimation of machining time.
8. Explain the types of sheet
metal joints.
9. Explain the pattern allowances.
PARTB 7x10=70 marks
1. An
industrial plant with initial value of Rs. 400000/ has a salvage value of
Rs.50000/ at the end of 25 years, but sold for 260000/ at end of 10years.
What is the profit or loss to the owner, if sinking fund method of depreciation
is adopted? Take interest rate @ 8%.
2.
A catalogue price of a machine is Rs 6000/ and the
discount allowed to the distributors is 20% of the catalogue price. At some
stage, it was found that the selling expenses were half the factory cost and
material cost, labour cost and the factory overheads were in the ratio of 1:4:2
if the material cost was Rs 400/. What profit was made by the factory on each machine
3.
Determine the number of rivets of dimensions as shown
in the figure. Which can be manufactured from 4 Kg of MS. Assume that there is
no wastage of material density of MS is 8
gm/cc. All dimensions are in cm.
1. A tapered component is to be manufactured in a lathe by compound rest method out of a given bar of 60mm dia and 100 mm length. Assume the following data:Details of tapered components Major dia =60mmMinor dia =20mm Length of taper =100 mmCutting speed 75 m/min. hand feed by compound rest =0.05 mm/rev depth of cut should not exceed 4 mm. Determine the time required for machining. All dimensions are in mm.
2.
A 20 X 7.5 cm CI surface is to be faced on milling
machine with a cutter having a diameter of 125 cm and 20 teeth. If the cutting
speed and feed are 50m/min and 4.5 cm/min respectively, determine the milling
time, rpm of the cutter and feed per tooth.
3. Estimate
the time required for making an open tank of size 50x50x50 cm by gas welding.
Size of sheet used is 50x50x0.3 cm welding is to be done on both sides. Assume
fatigue allowance to be 10% and welding speed outside as 6m/hr and inside 5m/hr.
4. Two
1m long MS plates of 10mm thickness are to be welded by a lap joint with the
help of a 6 mm electrode. Determine the cost of welding
a.
Current used :250
amp
b.
Voltage :
30 V
c.
Welding speed : 10m/hr
d.
Electrode used : 0.4 kg/m of welding
e.
Labour charges Rs 1/
hr
f.
Power charges Rs 0.20/KWh Cost of electrode Rs 5/kg
5.
Estimate the size of stock and weight of material
required to forge 100 MS bolts as shown in figure. The bar stock diameter is 3 cm.
1. Estimate the cost of 2000 CI pulleys as shown in the figure. Its surfaces are to be machined after casting. The pattern is supplied by the customer itself. Following data can be used:Cost of metal = Rs.5/kg Moulds prepared by each worker/day=20Melting charges = 20% of metal costMachining allowance on each side may be taken as 2mm Wages of each moulder =Rs. 16/dayDensity of CI = 7.2 gm/cc Overhead charges = 25% of metal cost.
10.
a)Explain the procedure for process costing
b) Compare manual tendering with etendering