Related Questions

The mixing vat in a factory receives liquid ingredients through six separate value--- labeled R.S.T.U,Y and Z -- each of which has exactly two settings: open and closed.The mixing vat operator must ensure that each valve is set open or closed according to the following conditions: If T is open, both S and Z must be closed, R and Z cannot both be closed at the same time; If Y is closed, Z must also be closed;S and U cannot both be open at the same time. If the maximum number of valves that can be closed at the same time are closed which of the following must true?
A R is open
B S is open
C T is open
D Z is open
The mixing vat in a factory receives liquid ingredients through six separate value--- labeled R.S.T.U,Y and Z -- each of which has exactly two settings: open and closed.The mixing vat operator must ensure that each valve is set open or closed according to the following conditions: If T is open, both S and Z must be closed, R and Z cannot both be closed at the same time; If Y is closed, Z must also be closed;S and U cannot both be open at the same time. If R is closed and U is open, which of the following must be true?
A S is open
B T is open
C T is closed
D Y is closed
The mixing vat in a factory receives liquid ingredients through six separate value--- labeled R.S.T.U,Y and Z -- each of which has exactly two settings: open and closed.The mixing vat operator must ensure that each valve is set open or closed according to the following conditions: If T is open, both S and Z must be closed, R and Z cannot both be closed at the same time; If Y is closed, Z must also be closed;S and U cannot both be open at the same time. If Z is open, which of the following must be true?
A S is open
B T is open
C U is open
D y is open
The mixing vat in a factory receives liquid ingredients through six separate value--- labeled R.S.T.U,Y and Z -- each of which has exactly two settings: open and closed.The mixing vat operator must ensure that each valve is set open or closed according to the following conditions: If T is open, both S and Z must be closed, R and Z cannot both be closed at the same time; If Y is closed, Z must also be closed;S and U cannot both be open at the same time. Which of the following, if given to the mixing vat operator as an instruction, would not determine the setting of any other valve ?
A S must be open
B T must be open
C U must be open
Given figures showing : Sales Taka 8,200, Opening inventory Taka 1,300, Closing inventory Taka 900, Purchases Taka 6+,400, Carriage inwards Taka 200, the cost of goods sold figure is :
A Taka 6800
B Taka 6200
C Taka 7800
D Taka 7000
A cyclist leans inwards when he is negotiating a curve so that
A he may increase his speed
B his weight may be reduced
C necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion.
D no frictional force may be produced between the wheels and the axle
The method of soil conservation in which stones grass, soil are used to build barriers along contours and trenches are made in front of the barriers to collect water is called?
A Mulching
B Contour barriers
C Rock dam
D Terrace farming
Contours' are lines connecting places having ________
A Equal temperature
B Equal pressure
C Equal rainfall
D Equal height
Contours are lines showing
A Places on earth of equal rainfall
B Places of same temperature
C Places on earth at the same altitude
D None of these
To represent a family budget on a circle graph, how many degrees of the circle should be used to represent an item that is 20% of the total budget?
A 60 degree
B 62 degree
C 70 degree
D 72 degree

Next steps