Related Questions

Which one of the following is not necessarily the advantage of D.C. motors over A.C. motors?
A Low cost
B Wide speed range
C Stability
D High starting torque
Read the following information and answer the questions giver below it: *Seven students P,Q,R,S,T,U and V take a series of tests. *No two students get similar marks. *V always scores more than P. *P always scores more than Q. *Each time either R scores the highest and T gets the lest, or alternatively S scores the highest and U or Q scores the least. If S is ranked sixth and Q is ranked fifth, which of the following can be true ?
A V is ranked first or fourth
B R is ranked second or third
C R is ranked second or fifth
D V is ranked third or fourth
Read the following information and answer the questions giver below it: *Seven students P,Q,R,S,T,U and V take a series of tests. *No two students get similar marks. *V always scores more than P. *P always scores more than Q. *Each time either R scores the highest and T gets the lest, or alternatively S scores the highest and U or Q scores the least. If R is ranked second and Q is ranked fifth, which of the following must be true ?
A S is ranked third
B T is ranked sixth
C P is ranked sixth
D V is ranked fourth
Read the following information and answer the questions giver below it: *Seven students P,Q,R,S,T,U and V take a series of tests. *No two students get similar marks. *V always scores more than P. *P always scores more than Q. *Each time either R scores the highest and T gets the lest, or alternatively S scores the highest and U or Q scores the least. If S is ranked second, which of the following can be true ?
A U gets more than v
B V gets more than S
C P gets more than R
D P gets more than V
The capacity of computer memory is increasing exponentially . At the same time increased capacity is becoming available at cheaper rate. Two years ago 1GB RAM cost TK. 5,000. Now 4GB Ram is available at the same price. If this trend continues what capacity of RAM will you get for TK. 5,000 after 3 years time ?
A 32GB
B 80GB
C 60.72GB
D 76GB
Ahmad has containers of two different sizes. The total capacity of 16 containers of one size is x gallons,and the total capacity of 8 containers of the other size is also x gallons , and x> 0. In terms of x , what is the capacity, in gallons, of each of the larger containers?
A 4x
B 2x
C x/2
D x/8
Read the following information and answer the questions giver below it: *Seven students P,Q,R,S,T,U and V take a series of tests. *No two students get similar marks. *V always scores more than P. *P always scores more than Q. *Each time either R scores the highest and T gets the lest, or alternatively S scores the highest and U or Q scores the least. If R gets most, V should be ranked not lower than--
A Second
B Third
C Fourth
D Fifth
Babul attended five tests during the semester and the average of his test scores was 87. If has average score after first three tests were 85, what was the average of his 4th and 5th test?
A 88
B 89
C 90
D 93
Jamal's average score in 4 tests was 80 out of a possible 100 . If his scores in 2 of the tests were 65 and 70, what is the lowest that either of his other scores could have been ?
A 70
B 80
C 90
D 85
Rashed's average on 4 tests is 80. Assuming he can earn no more than 100 on any test, what is the least he can earn on his 5th test and still have a chance for an average of 85 after seven tests ?
A 60
B 70
C 75
D 85

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