Related Questions

According to Fleming's right-hand rule for finding the direction of induced e.m.f., when middle finger points in the direction of induced e.m.f., forefinger will point in the direction of
A Motion of conductor
B Lines of force
C Either of the above
D None of the above
Flemings "Left hand Rule" is associated with the effect of
A electric field on current
B magnetic field on magnet
C electric field on magnet
D magnetic field on current
Two circular dials of exactly the same size are mounted on a wall side by side in such a way that their perimeters touch at one point. Dial 1, which is on the left , spins clockwise around its center , and dial 2 , which is on the right spins counter clockwise around its center . (Assume that there is no friction at the point of contact between the dials.) Each dial is marked on its perimeter at three points that are at equale distances around the points arked ondial 1 are N, O, and P and the points marked on dial 2 are X, Y, and Z. If points O and Z are just meeting at the point of contact between the dials , and if dial 1 spins at the same speed as dial 2, what is the smallest number of revolutions of each dial that will bring O and Z together again?
A 1
B 2
C 3
D 4
"Rule of thumb" means ----
A a rule based on science.
B a bad rule
C a rule that must be obeyed
D a rule based on past experience rather than on theory
By the rule of thumb
A By the use of force
B By the use of trickery
C By cheating and deception
D By practical experience which is rather rough
Each of the following idioms is followed by some alternative meaning. choose the one which best expresses its meaning : By the rule of thumb
A By the use of force
B By practical experience which is rather rough
C By cheating and deception
D By the use of trickery
Choose the one which best expresses the meaning of the given IDIOM : By the rule of thumb
A By the use of force
B By practical experience which is rather rough
C By cheating and deception
D By the use of trickery
'The rule of thumb' means-
A algebric rule
B method based on experience and practice
C the rule given by authority
D unimportant rule
‘Rule of thumb’ means -
A a rule based on science
B a bad rule
C a rule must be obeyed
D a rule based on past experienced rather than on theory
A rule of thumb for choosing indexes for a relational database includes which of the following?
A Indexes are more useful on smaller tables.
B Indexes are more useful for columns that do not appear frequently in the WHERE clause in queries.
C Do not specify a unique index for the primary key of each table.
D Be careful indexing attributes that have null values.

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