Related Questions

The elevator in an eleven-storied office building travels at the rate of one floor per 1/4 minute, which allows time for picking up and letting down passengers. At the main floor and at the top floor the operator stops for 1 minute. How many complete (with return) trips will the operator makes during a 7-hour period?
A 50
B 60
C 80
D 90
The elevator in an eleven-storied office building travels at the rate of one floor per 1/4 minute, which allows time for picking up and letting down passengers. At the main floor and at the top floor the operator stops for 1 minute. How many complete (return) trips will the operator make during a 7 hours period?
A 50
B 60
C 80
D 90
If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor downstream of the crest-wall, is given by the equation
A $${\text{t}} = \frac{{{\text{h}} + 1}}{{{\text{G}} + {\text{t}}}}$$
B $${\text{t}} = \frac{{{\text{h}} - 1}}{{{\text{G}} + {\text{t}}}}$$
C $${\text{t}} = \frac{{{\text{h}} - 1}}{{{\text{G}} - {\text{t}}}}$$
D $${\text{t}} = \frac{{{\text{h}} + 1}}{{\text{G}}}$$
On sports day. if 30 children were made to stand in a column, 16 columns could be formed. If 24 children were made to stand in a column,how many columns could be formed?
A 45
B 20
C 22
D 29
On sports day, if 30 children were made to stand in a column, 16 columns could be formed. If 24 children were made a stand in a column, how many columns could be formed ?
A 40
B 20
C 22
D 30
Rectangular floors X and Y have equal area. If floor X is 12 feet by 18 feet and Floor Y is 9 feet wide, what is the length of floor Y, in feet?
A 13.5
B 18
C 21
D 24
An R.C.C. lintel is spanning an opening of 2m span in a brick wall. The height of the roof is 2.9m above the floor level and that of the opening is 2.1 m above the floor level. The lintel is to be designed for self weight plus
A Triangular load of the wall
B UDL of wall
C UDL of wall + load from the roof
D Triangular load + load from the roof
The diameter of main bars in R.C.C. columns, shall not be less than
A 6 mm
B 8 mm
C 10 mm
D 12 mm
In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by
A 10%
B 20%
C 30%
D 40%
Per column inch (1 column * 1 inch) area newspaper advertisement costs Tk. 1,200. How much would a "5 columns by 3 inches" newspaper advertisement cost?
A Tk. 3,600
B Tk. 6,000
C Tk. 9,600
D Tk. 18,000

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