Sunday, January 4, 2015

ELECTRICAL CIRCUITS OBJECTIVE BITS -2



 1)   When a resistor R is connected to a current source, it consumes a power of 18W. When the same R is connected to a voltage source having same magnitude as the current source, the power absorbed by R is 4.5W. The magnitude of the current source & value of R are
a) Root18 A & 1            b) 3,2             c) 1,18                       d) 6, 0.5                            Ans: (b)

2)     If v, w, q stand for voltage, energy & charge, the v can be expressed as

        a) v = dq / dw                  b) v = dw/ dq            c) dv = dw/ dq        d) dv= dq / dw. Ans: (b)

3)      The phase of even symmetric signal is

         a) + 90deg        b) - 90deg                c) 0deg      d) 0deg  or 180deg                       Ans: (d)

4)     A coil of resistor of 5ohms  and inductance 0.4 H is connected to a 50 V d.c supply. The energy             stored in the field is

a) 10 joules                  b) 20 joules           c) 40 joules           d) 80 joules               Ans:(b)

5)   Consider the following units:
1) sec-1 2) rad2 sec-2 3)sec 4) ohm, the units of R/L, 1 / LC, CR and sqt (L / C) are respectively.
a) 1,2,4 and 3 b) 3,2,1 and 4 c) 2,4,1 and 3 d) 1,2,3 and 4                                    Ans:(d)

6)  An ideal constant voltage source is connected in series with an ideal constant current source.               Considered together, the combination will be a
a) Constant voltage source b) constant current source c) constant voltage source and constant current source or a constant power source                                                           Ans: (b)

7)       A network contains only independent current sources and resistors. If the values of all the resistors are doubled, the values of the node voltage
a) will become half b) will remain unchanged c) will become double
d) cannot be determined unless the circuit configuration and the values of the resistors are known                                                                                                                              Ans: ©

8)   A network N is a dual of network N if
a) both of them have same mesh equations b) both of them have same node equations c) mesh equations of one are the node equations of the other d) KCL and KVL equations are the same
Ans: ©


Wednesday, December 31, 2014

MOST IMPORTANT BITS ELECTRICAL CIRCUITS -1

1) A network has 7 nodes and 5 independent loops. The number of branches in the network is
a) 13    b) 12       c) 11           d) 10                                                                                        Ans: ( c )
2) The nodal method of circuit analysis is based on
a) KVL & ohms  law b) KCL & ohms law c) KCL & KVL d) KCL,KVL & ohms law            Ans: (b)
3) For a network of seven branches and four nodes, the number of independent loops will be
a) 11        b) 8                   c) 7                       d) 4                                                                  Ans:(d)
4) A network has”b “branches and” n “nodes. For this mesh analysis will be simpler then node analysis if n is greater then
a) b         b) b +1               c) (b / 2 ) + 1                            d) b / 2                                             Ans:(c)
5) The number of independent loops for a network with n nodes and b branches is
a) n-1                 b) b-n                 c) b-n + 1                     d) independent no. of nodes              Ans: (c)
6) The following constitutes a bilateral element
a) R                b) FET                  c) Vacuum Tube                d) metal rectifier.                         Ans: (a)
7) K.Laws fail in the case of
a) linear networks      b) non linear networks   c) dual networks    d) distributed parameter networks. Ans: (d)
8) Ohm‟s law, KVL &KCL will fail at
a) Low frequency          b) high frequency                     c) high power               d) none            Ans: (b)
9) Total no, of mesh equations required is equal to
a) no of links       b) no. of tree branches         c) no. of nodes            d)none                             Ans; (a)

10)Two incandescent light bulbs of 40W & 60W rating are connected in series across the mains. Then
a) The bulbs together consume 100W          b) The 60W bulb glows brighter

c) The 40W bulb glows brighter d) The bulbs together consume 50W                                           Ans: (c)

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Friday, February 28, 2014

KEY FOR DIPLOMA EXAMINATIONS CONDUCTED DURING DECEMBER-2013


EE-101           EE-301                 EE-401            EE-601

EE-102           EE-302               EE-402               EE-602

EE-103            EE-303               EE-403              EE-603

EE-104           EE-304               EE-404              EE-604

EE-105           EE-305              EE-405              EE-605

EE-107            EE-306             EE-406             EE-606

                                                  EE-407 

THIS IS FOR INFORMATION ONLY.............NO ACTION CAN BE TAKEN

Friday, November 22, 2013

DIPLOMA EXAMINATIONS MARCH-2013 EXAMINATION KEY 3SEM DEEE

   CLICK HERE TO DOWNLOAD KEY FOR THE DIPLOMA                              EXAMINATIONS MARCH/APRIL-2013







 this is for information only no action can be taken .................