1
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
A spherical thermocouple junction of diameter $$0.706 mm$$ is to be used for the measurement of temperature of a gas stream. The convective heat transfer co-efficient on the bead surface is $$400W/{m^2}K.$$ Thermo-physical properties of thermocouple material are
$$k = 20W/mK,$$ $$C = 400J/kgK$$ and $$\rho = 8500\,\,kg/{m^3}.$$ If the thermocouple initially at $${30^ \circ }C$$ is placed in a hot stream of $${300^ \circ }C$$ the time taken by the bead to reach $${298^ \circ }C$$, is
A
$$2.35s$$
B
$$4.9s$$
C
$$14.7s$$
D
$$29.4s$$
2
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
In a condenser, water enters at $${30^ \circ }C$$ and flows at the rate $$1500$$ $$Kg/hr.$$ The condensing steam is at a temperature of $${120^ \circ }C$$ and cooling water leaves the condenser at $${80^ \circ }C$$. Specific heat of water is $$4.187 kJ/kg$$ $$K.$$ If the overall heat transfer coefficient is $$2000$$ $$W/{m^2}K,$$ the heat transfer area is
A
$$0.707{m^2}$$
B
$$7.07{m^2}$$
C
$$70.7{m^2}$$
D
$$141.4{m^2}$$
3
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
There are two products P and Q with the following characteristics GATE ME 2004 Industrial Engineering - Inventory Control Question 18 English

The economic order quantity (EOQ) of products P and Q will be in the ratio.

A
$$1:1$$
B
$$1:2$$
C
$$1:4$$
D
$$1:8$$
4
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
A company has an annual demand of $$1000$$ units, ordering cost of Rs.$$100$$/order and carrying cost of Rs.$$100$$/unit –year. If the stock-out costs are estimated to be nearly Rs.$$400$$ each time the company runs out-of-stock, the safety stock justified by the carrying cost will be
A
$$4$$
B
$$20$$
C
$$40$$
D
$$100$$
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