The
end of a cylindrical vessel can be closed by a head, which can be one of the
four shapes. For the same thickness, choose the one which can withstand the
highest pressure.
(A)
Flat plate
(B)
Hemispherical
(C)
Torispherical
(D)
Ellipsoidal
GATE
2001
Answer: (B)
P
is the investment made on an equipment, S is its salvage value and n is the
life of the equipment in years. The depreciation for mth year by the
sum of years-digits method will be
(A)
(P - S)/n
(B)
1 - (P/S)1/m
(C)
m(P - S)/S
(D)
2(n – m + 1)(P - S)/n(m + 1)
GATE
2001
Answer: (D)
An
investment of Rs. 1000 is carrying an interest of 10% compounded quarterly. The
value of the investment at the end of five years will be
(A)
1000(1+0.1/4)20
(B)
1000(1+0.2)20
(C)
1000(1+0.1/4)5
(D)
1000(1+0.1/2)5
GATE
2001
Answer: (A)
For
a cylindrical internally pressurized vessel which of the following closure
types would withstand highest pressure if each closure is of the same material
and thickness?
(A)
Hemispherical
(B)
Ellipsoidal
(C)
Conical
(D)
Flat plate
GATE
1998
Answer: (A)
For
a gas cylinder designed on the “thin cylinder principle” calculate the
thickness of a seamless cylinder under the following conditions.
Pressure
of N2 gas in the cylinder = 100×105 N/m2
Tensile
stress permissible = 1200×105 N/m2
Internal
diameter of the cylinder = 25 cm
(A) 10.4 mm
(B) 11.5 mm
(C) 12.5 mm
(D) 13.5 mm
GATE
1992
Answer: (A)
The
plant of a chemical company has an initial worth of Rs. 50 lakhs and an
estimated exchange value of Rs. 2 lakhs in service life of 8 years. Estimate
the book value of the plant at the end of 4 years for straight line method of
depreciation?
(A)
Rs. 24 lakhs
(B)
Rs. 26 lakhs
(C)
Rs. 28 lakhs
(D)
Rs. 30 lakhs
GATE
1992
Answer: (B)
The
cost of a blower in 1980 is Rs. 2000. What is the cost of the blower in 1988
with the same capacity? The cost index for the blower in 1980 and 1988 are
respectively 250 and 300.
(A)
Rs. 1800
(B)
Rs. 2100
(C)
Rs. 2400
(D)
Rs. 2600
GATE
1992
Answer: (C)
A
reactor having a salvage value of Rs 10,000 is estimated to have a service life
of 10 years. The annual interest rate is 10%. The original cost of the reactor
was Rs. 80,000. The book value of the reactor after 5 years will be
(A)
Rs. 40,000
(B)
Rs. 45,000
(C)
Rs. 48,000
(D)
Rs. 52,000
GATE
1991
Answer: (B)
In
the manufacturing industry breakeven point occurs when
(A)
The annual rate of production equals the
assigned value
(B)
The total annual product cost equals the
total annual sales
(C)
The annual profit equals the expected
value
(D)
The annual sales equals the fixed costs
GATE
1991
Answer: (B)
A
standard type of heat exchanger with a negligible scrap costs Rs. 40000 and
will have a useful life 6 years. Assuming an effective compound interest of 10%
per year, the capitalized cost of a heat exchanger will be
(A)
Rs. 60880
(B)
Rs. 90880
(C)
Rs. 91880
(D)
Rs. 81880
GATE
1991
Answer: (C)
The
total capital investment for a chemical plant is Rs. 1000000 and the working
capital is Rs. 100000. If a turnover ratio is 1 the gross annual sales will be
(A)
Rs. 800000
(B)
Rs. 900000
(C)
Rs. 1000000
(D)
Rs. 1100000
GATE
1991
Answer: (B)
A
heat exchanger with an initial investment of Rs. 300000 has a 6 years life. How
much can be spent on an improved design which has a life of 12 years and is
expected to save Rs. 10000 per year? Annual compounded interest rate is 8%.
(A)
Rs. 232232
(B)
Rs. 261400
(C)
Rs. 321400
(D)
Rs. 352340
GATE
1991
Answer: (B)
A
spherical storage tank is having an outer diameter of 2 m and a thickness of 5
mm. The tank seems are welded and having joint efficiency of 0.85. The material
of construction will be plain carbon steel. The chemical will be stored at
maximum temperature of 298 K. No corrosion problems are expected. What maximum
internal pressure the tank will withstand safely. Allowable design stress value
at working temperature = 118 MN/m2.
(A)
1.003 Mn/m2
(B)
1.05 Mn/m2
(C)
2.11 MN/m2
(D)
2.68 MN/m2
GATE
1991
Answer: (A)
For
a project having a life of ten years the following cash flow pattern is
expected:
|
End of year |
Net cash flow |
|
0 1 - 10 10 |
-5000000 2000000 -15000000 |
If
the expected interest rate is 2% what is your recommendation about implementing
the project
(A)
May be recommended for implementation
(B)
May not be recommended for
implementation
(C)
Data is sufficient
(D)
None of these
GATE
1990
Answer: (A)
The
annual production costs for a plant are Rs. 36.4 lakhs while the sum of annual
fixed charges, overhead costs and general expenses are Rs. 26.0 lakhs. What is
the breakeven point in units of production per year if the total annual sales
are 72.8 lakhs and the product sells at Rs. 520 per unit.
(A)
1000
(B)
1500
(C)
10000
(D)
15000
GATE
1989
Answer: (C)
For
a 1-1 fixed tube sheet heat exchanger the following data are given
Design
inside pressure: shell side 103
KN/m2
Tube
side 2×103 KN/m2
Design
temperature shell side
50°C
Tube
side 150°C
Allowable
stress value at both design temperature is 1.2×105 KN/m2.
Shell inside dia = 0.6 m, corrosion allowance is 3×10-3 m and joint
efficiency = 1. What is the shell thickness?
(A)
5.50×103 m
(B)
6.5×103 m
(C)
7.0×103 m
(D)
8.5×103 m
GATE
1990
Answer: (A)
A
bond matures after5 years and has a maturity value of Rs. 1000. If the interest
rate is 12%, what is the present worth of the bond?
(A)
Rs. 568
(B)
Rs. 575
(C)
Rs. 580
(D)
Rs. 590
GATE
1988
Answer: (A)
Cylindrical shell A closed at the ends have been
provided with 3 circumferential ring stiffeners. Shell B is identical to A but
is provided with 6 circumferential stiffeners. Which vessel can withstand more
internal pressure.
(A)
A
(B)
B
(C)
Cannot be predicted
(D)
Same pressure in both
GATE
1988
Answer: (B)
A
heat exchanger of area 10 m2 costed Rs.50000 in 1985. What is the
estimated cost of a 15 m2 exchanger in 1987. Assume that the cost
index in 1985 was 270 and in 1987 is 320.
(A)
Rs. 70250
(B)
Rs. 75580
(C)
Rs. 85175
(D)
Rs. 87750
GATE
1988
Answer: (B)
A
plant is producing 1000 tons per year of a product. The overall yield is 70% on
mass basis. The raw material costs Rs. 100/ton and the product sells at Rs. 350
per ton. A process modification has been devised that will increase the yield
to 75%. The additional investment required is Rs. 400000. What is the rate of
return for the additional investment made?
(A)
3.5%
(B)
4.5%
(C)
5.5%
(D)
6.5%
GATE
1987
Answer: (B)
Related Article:
GATE Chemical Engineering Questions and Answers – Chemical Reaction Engineering
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