| Post Name | ASSISTANT ENGINEER (ELECTRICAL) DIRECT AND BY TRANSFER |
|---|---|
| Department | KSEB |
| Question Paper Code | 193/2014 |
| Date of Test | 15 November 2014 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
In a series RLC circuit at resonance:
Answer
D. All the above
2
The superposition theorem is essentially based on the concept of :
Answer
B. Linearity
3
. The voltage drop acrogs a resistor of 100 0 is 10 volts. The wattage of the resistor must be :
Answer
B. 1W
4
For a symmetric lattice network the value of parameters is 3 Ω and that of diagonal impedance is 5 Ω. Then the Z parameters of the network are given below:
Answer
Question Cancelled
5
The following relation expresses Ohm's law at a point:
Answer
A. J⃗ = σE⃗
6
Maxwell's divergence equation for the magnetic field is given by :
Answer
B. ∇ · B⃗ = 0
7
Unit of magnetic flux is:
Answer
D. Weber
A eee
[P.T.0.]
8
If E is the field between the plates of a parallel-plate capacitor, the electrostatic energy per unit volume is:
Answer
C. (1/2)ε₀E²
9
The condition for an electric field E⃗ to be a static electric field is:
Answer
C. ∇ × E⃗ = 0
10
Which of the following systems is non-linear?
Answer
Question Cancelled
11
The system wise:
|
Answer
A. stable, causal
12
The system y(x + 3) + y(x + 2) = x(x + 4) is:
Answer
Question Cancelled
13
If x(t) is odd, then Fourier series coefficients must be :
Answer
Question Cancelled
14
The trigonometric Fourier series of an even function of time does not have the ;
Answer
B. Sine terms
15
The Z transform of the sequence x(n) = u(n), where u(n) = 1 for n ≥ 0 and 0 for n < 0, is:
Answer
C. z/(z − 1)
16
Kelvin's double bridge is used for the measurement of : |
Answer
D. Low resistance
17
| _ 17. Megger is basically a:
Answer
B. Moving coil instrument
18
A’quadrant electrometer measures :
Answer
A. Charge
19
A-circuit has impedance of ($+ /4). If a voltage (100+ 750) is applied, power in the circuit
will be across the 5 9 resistance in the mesh shown below is:
Answer
Question Cancelled
20
TOD meter is used to record : :
Answer
A. Energy, time and demand
21
In an induction machine, if the air gap is increased : :
Answer
C. Power factor will be lowered
22
The all-day efficiency of a transformer depends on :
Answer
D. both (B) and (C) are correct
23
A transformer has negative voltage regulation when its power factor is :
Answer
C. Leading ,
24
Instrument transformers are used in alternating current circuits for extending the range of :
Answer
D. All the above
25
An autotransformer has a transformation ratio of 0.7, supplies a load of 2 KW. The power
transferred conductively from primary to secondary is :
Answer
B. 14KW
26
The number of armature parallel paths in a triplex, lap wound, 12 pole, de generator :
Answer
C. c) 36
27
The full load copper loss of a transformer is 1200 W its copper loss at 50% load would be :
Answer
A. 300 W
28
a8, A400 KVA, 200 Hz transformer is operated at 100 Hz, its RVA rating 1s:
Answer
A. 200 KVA
29
Over excited synchronous generator runs at :
Answer
B. lagging pf
30
The voltage between adjacent coils in a crosa over winding of a transformer should not be
ereater than:
Answer
Question Cancelled
31
The percentage of silicon in transformer stampings is usually limited to:
Answer
C. 4% |
32
The permeability of a material is 0.999991, it is classified as :
Answer
B. diamagnetic
33
Hysteresis loss varies with frequency fas :
Answer
Question Cancelled
34
Usual values of flux density B, for a power transformer using hot rolled silicon steel is :
Answer
B. 1.25 to 1.45 Wh/m? |
35
The ratio of height to width of window while designing window dimensions of a transformer
can be between :
Answer
B. 2to4
36
Skewing of rotor slots in an induction motor helps in :
Answer
Question Cancelled
37
In induction motors larger the air gap ——————————— noise level and —————————_ cooling.
Answer
Question Cancelled
38
Alternators are usually rated in: ' ;
Answer
A. KVA
39
Due to skin effect the effective resistance —-—--————— with increase in frequency.
Answer
B. increases
40
The surge impedance of a transmission line is given by :
Answer
B. V(Li
41
MHO relay is usually employed in protection of :
Answer
C. long lines only
42
For interrupting capacitive currents which circuit breaker is used :-
Answer
Question Cancelled
43
Per unit value of any quantity is defined as :
Answer
B. Actual value in any wnit to the base value in the same unit ,
44
Arelay which operates when the alternating current exceeds a certain preset value :
Answer
A. . Over current relay
45
A 10 MVA generator has power factor 0.866 lagging. The reactive power produced will be:
Answer
C. 5MVA
46
Corona loss in HVDC transmission compared that of AC transmission is :
Answer
B. Low
47
Nyquist stability is used to determine :
Answer
Question Cancelled
48
Compared to a closed loop system an open loop system is :
Answer
B. more stable and less accurate
49
Ina feedback amplifier, the band width :
Answer
Question Cancelled
50
‘The main application of transfer function is in the study of :
Answer
B. steady state as well as transient behavior of the systems
51
Given the system specification in time domain, best approach for designing is :
Answer
B. - Root locus
52
The band width of a control system can be increased by :
Answer
B. phase lead compensator
53
The servo motor differs from other motors since it has :
Answer
C. low inertia and high torque
54
| 5S4. A 100 V voltmeter has an accuracy of 5% on full scale. The percentage error while measuring
| 50 V will be :
Answer
Question Cancelled
55
Moving coil in dynamometer wattmeter is connected :
Answer
Question Cancelled
56
Induction wattmeter’s are free from ——\H+— error.
Answer
Question Cancelled
57
Hays bridge is particularly used for measurement of :
Answer
A. inductance Z with large phase angle
:
58
Operation of
Answer
C. series resonance
59
At low power factor dynamometer type wattmeter will cause :
Answer
B. high error
~
60
The observed signal in an oscilloscope should be applied :
Answer
B. across its Y plates
61
Amodern power semiconductor device IGBRT combines the characteristic of :
|
Answer
A. BJT and MOSFET
62
In thyristor latching current ia ———_———————_ than holding current. |
Answer
C. Greater
63
Voltage feedback amplifier is a —————————. amplifier.
Answer
Question Cancelled
64
Which of the following ia a fastest ADC?
Answer
B. Flash type
65
Which of the following 1s the most popular DAC?
Answer
A. R-—-2R ladder type
66
The sequential cireuit in which the output depends only on the present state of flip-flops is
called a ————————_ circuit.
Answer
Question Cancelled
67
A————- circuit 1s used to improve the rise time and fall time of pulses.
Answer
D. Schmitt trigger
68
How many inputs and outputs does a full adder have?
Answer
C. inputs and 2 outputs
69
“For an SCR, dw/dt protection is achieved through the use of :
Answer
D. None of the above
70
A single phase voltage controller feeds an induction motor and a heater, which of the
following statements are true?
Answer
C. In induction motor only fundamental and in heater fundamental as well as |
harmonics are useful
71
A motor armature supplied through phase control SCR's receives a smoother voltage shape
at :
Answer
A. high motor speeds
72
73
A single phase full bridge inverter can operate in load commutation mode in case load
consists of :
Answer
B. RLC under damped
*
74
Hard firing of a thyristor :
,
Answer
A. Reduces TURN ON time
75
The maximum load that is usually connected in power sub-circuit ia:
Answer
B. 3000 W
76
The insulation resistance of HV circuit breaker is :
Answer
D. 2000MQ
77
The range of a de ammeter can be increased by using :
Answer
C. Shunt resistor
78
Which of the following wires will have the least diameter?
Answer
D. 40SWG
79
The rated load of an underground cable is always ——-—————_ the natural load. :
Answer
Question Cancelled
80
While laying 11 KV cables, the minimum bending radius has to be (If D = diameter of the
cable) : :
Answer
Question Cancelled
81
Identify the present Governor of Kerala :
Answer
Question Cancelled
82
Name the Kerala reformer who was famous for “Villu Vandi Yathra’ :
|
Answer
B. Avyyankali
83
The poem ‘Udyanavirunnu’ was penned by :
Answer
D. Pandit Karuppan
84
Srinagar is situated on the bank of the river :
Answer
B. Jhelum
|
85
‘Green Revolution’ has been very successful in which of the following crops?
peggy
Answer
B. Wheat
|
86
Bhagat Singh, Raja Guru, Sukhdev were hanged for their role in: —
|
Answer
D. Lahore Conspiracy
87
The person who led ‘Ezhava memorial’ of 1896 :
|
Answer
C. Dr. Palpu
88
In which year was the human population census last conducted in India?
|
Answer
C. 2011
89
Who was the founder of ‘Vavoottu Yogam’?
|
Answer
C. Sree Narayana Guru
90
Which type of clouds are popularly called ‘rain clouds”?
|
Answer
B. Nimbostratus
91
Who founded ‘Prathyaksha Raksha Daiva Sabha’ (PRDS)?
Answer
C. Poikayil Yohannan
92
Sardar Sarovar project is to be constructed on the river :
Answer
D. Narmada
93
The 2016 edition of Olympic Games will be held in which country?
Answer
C. O) Brazil
94
The prestigious Gandhi Peace Prize — 2013 has been conferred to :
Answer
A. Chandi Prasad Bhatt
95
Who was the founder of ‘Ananda Maha Sabha’? bec
Answer
B. BGrahmananda Swami Sivyogi
96
Which of the following states of India has longest coast line?
Answer
C. Gujarath
97
The unique identification number has been associated with :
Answer
D. Aadhaar
98
Vayalar Award 2013 was given to: :
Answer
A. Prabha Varma
99
Name the journal published by Vagbhatananda :
Answer
A. Abinava Keralam
100
Which of the following programme aims to bring the deprived sections of society with in the
banking network through opening account?
Answer
C. Swabhimaan
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