sse apsn quiz ppt based

7/30/2019 Sse Apsn Quiz Ppt Based

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SAVEETHA SCHOOL OF

ENGINEERINGSAVEETHA UNIVERSITY

Click here to begin

OBJECTIVE TYPE QUIZ


2/39

How many valence electronsare present in a semiconductor?

A 2B 8

C 4D 0


3/39

An electric heater draws 8 A from 250 v Supply.What is its power rating? Find the resistance of

heater element.

P = 1000 W, R = 50 ohmsP = 250 W, R = 61.25 ohmP = 2000 W, R = 31.25 ohmP = 1000 W, R = 10 ohm


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A tree has

a closed pathNo closed pathsBothnone


5/39

The meeting of variouscomponents in a power system is

called

BranchesBusLinksnone


6/39

In a single line diagram neutral ispresent.

TrueFalse


7/39

The per unit impedance of a transformer determined from h.v side and l.v side the

magnitudes are_______

EqualNot equalDepends on KVAnone


8/39

A transformer has reactance of 4%on a 20MVAbase. For 30MVA base reactance is ______

6%2.66%9%2%


9/39

If base value are 50MVA and 11KV the baseimpedance is ___ ohms

4.540.22271


10/39

If per unit impedance on 11KV base is 9 ohms, thep.u impedance on 33KV base will be ___ ohms

381271


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12/39

The number of branches in a tree is ___ thenumber of branches in a graph

less thenMore thenEqualNone


13/39

In element node incidence matrix, the rank is

less than node sgreater than nodesequal tonone


14/39

Among the following relations, which is correct

Kt = A b-1

Kt = A b

none


15/39

The dimension of basic loop incidence matrix is

links by nodeselements by linkslinks by branchesnone


16/39

If Ybus is symmetrical then the corresponding Z bus

unsymmetrical symmetricalneither a nor bnone


17/39

The off-diagonal elements in Y bus are called as ___

self admittance mutual admittancesymmetricalall


18/39

A Set of unconnected elements is defined as a _____ network

primitivecompletesymmetricalall


19/39

The branch admittance matrix can be obtained byusing ___

a closed pathno closed pathbothnone


20/39

Tapping of a transformer isprovided

At the phase e nd of LV side At the phase end of HV side At the neutral end of HV side At the middle of the HV side


21/39

A tap changer is used on atransformer for adjusting the

___ voltage

Primarysecondaryboth a and bnone


22/39

Booster transformer secondaryshould never

openedclosedboth a and bnone

d d


23/39

Tapping is provided ontransformer for varying the ___

voltage

inputoutputbothnone

Th N R h d h li


24/39

The N-R method , the non linear equations are approximated

using

Taylors series expansion Baylors series expansion

jailors series expansion none

I h d h


25/39

In ___ method the convergenceis not affected by choice of

slack bus.

N-RG-sbothnone


26/39

The N-R method has ___ convergence characteristics

quadraticlinear non linear none

Th l f fi


27/39

The elements of ___ are firstderivative of load flow

equations.

Jacobean mat rixsquare matrixbothnone


28/39

The voltage variation in a bus isdirectly related to __ power.

activeapparentreactivereal

A b i ll d if i l


29/39

A bus is called ___ if its voltageremains constant at any

situation

finite busswing businfinite busload bus


30/39

In N-R method memoryrequirement is

morelesscannot be determinenone


31/39

In G-S method memoryrequirement is

morelesscannot be determinenone


32/39

N-R method of iterations

3 to 55 to 7indefinablenone


33/39

Which one of the following is thefast method?

N-RG-Sdecoupled load methodnone


34/39

The flat voltage profile is

1+j0-1-J01-J0-1+j0

The acceleration factor does


35/39

The acceleration factor doesnot reduce the number of

iterations.TrueFalse

The elements in Jacobian


36/39

The elements in Jacobianmatrix will change in every

itertaionTrueFalse


37/39

The equations for real and


38/39

The equations for real andreactive power injected to the

bus is used in


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