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Network theorems and circuit theory
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q21 ⇒ A linear resistor having 0 < R < ∞ is a both current controlled and voltage controlled resistor [other wrong options] [Discuss in forum] current controlled resistor voltage controlled resistor none of the above |
Q22 ⇒ Superposition theorem can be applied
only to circuits having linear bilateral elements [other wrong options] [Discuss in forum] resistive elements passive elements non-linear elements |
Q23 ⇒ "Any number of current sources in
parallel may be replaced by a single
current source whose current is the algebraic
sum of individual source currents
and source resistance is the
parallel combination of individual
source resistances". The above statement is associated with Millman's theorem [other wrong options] [Discuss in forum] Thevenin's theorem Maximum power transfer theorem None of the above |
Q24 ⇒ "In any network containing more than
one sources of e.m.f. the current in any
branch is the algebraic sum of a number
of individual fictitious currents (the
number being equal to the number of
sources of e.m.f.), each of which is due
to separate action of each source of
e.m.f., taken in order, when the
remaining sources of e.m.f. are
replaced by conductors, the resistances
of which are equal to the internal resistances
of the respective sources". The above statement is associated with Superposition theorem [other wrong options] [Discuss in forum] Thevenin's theorem Norton's theorem None of the above |
Q25 ⇒ For maximum transfer of power, internal
resistance of the source should be equal to load resistance [other wrong options] [Discuss in forum] less than the load resistance greater than the load resistance none of the above |
Q26 ⇒ Millman's theorem yields equivalent voltage or current source [other wrong options] [Discuss in forum] equivalent resistance equivalent impedance equivalent voltage source |
Q27 ⇒ A star circuit has element of resistance
R/2. The equivalent delta elements will
be 3/2R [other wrong options] [Discuss in forum] R/6 2R 4R |
Q28 ⇒ The concept on which Superposition
theorem is based is linearity [other wrong options] [Discuss in forum] reciprocity duality non-linearity |
Q29 ⇒ "In any linear bilateral network, if a
source of e.m.f. E in any branch
produces a current I in any other
branch, then same e.m.f. acting in the
second branch would produce the same
current I in the first branch". The above statement is associated with reciprocity theorem [other wrong options] [Discuss in forum] compensation theorem superposition theorem none of the above |
Q30 ⇒ In a delta network each element has
value R. The value of each element in
equivalent star network will be R/3 [other wrong options] [Discuss in forum] R/6 R/4 R/2 |
Q31 ⇒ If the energy is supplied from a source,
whose resistance is i ohm, to a load of
loo ohms the source will be a voltage source [other wrong options] [Discuss in forum] a current source both of above none of the above |
Q32 ⇒ The superposition theorem is applicable
to current voltage and power [other wrong options] [Discuss in forum] voltage only current only both current and voltage |
Q33 ⇒ A delta circuit has each element of
value R/2. The equivalent elements of
star circuit with be R/6 [other wrong options] [Discuss in forum] R/3 2R 3R |
Q34 ⇒ Thevenin resistance Rth is found between same open terminals as for Eth [other wrong options] [Discuss in forum] by removing voltage sources along
with their internal resistances by short-circuiting the given two terminals between any two 'open' terminals |
Q35 ⇒ Kirchhoff's s law is applicable to both ac. as well d.c. circuits [other wrong options] [Discuss in forum] passive networks only a.c. circuits only d.c. circuits only |
Q36 ⇒ The circuit whose properties are same
in either direction is known as bilateral circuit [other wrong options] [Discuss in forum] unilateral circuit irreversible circuit reversible circuit |
Q37 ⇒ The circuit has resistors, capacitors
and semi-conductor diodes. The circuit
will be known as non-linear circuit [other wrong options] [Discuss in forum] linear circuit bilateral circuit none of the above |
Q38 ⇒ Between the branch voltages of a loop
the KirchhofFs voltage law imposes linear constraints [other wrong options] [Discuss in forum] non-linear constraints no constraints none of the above |
Q39 ⇒ In Thevenin's theorem, to find Z all independent voltage sources are short circuited and all independent current sources are open circuited [other wrong options] [Discuss in forum] all independent current sources are
short circuited and independent
voltage sources are open circuited all independent voltage sources are open circuited and all independent current sources are short circuited all independent voltage and current sources are short circuited |
Q40 ⇒ An ideal voltage source should have zero source resistance [other wrong options] [Discuss in forum] large value of emE small value of e.m.f. infinite source resistance |
Or |