Question is ⇒ For a 12 pulse operation, the two 6 pulse units are fed by, Options are ⇒ (A) Y - Y and Y - Y transformers, (B) Δ - Δ and Δ - Δ transformers, (C) Y - Y and Y - Δ transformers, (D) Y - Δ and Y - Δ transformers, (E) , Leave your comments or Download question paper.

Question is ⇒ For a 12 pulse operation, the two 6 pulse units are fed by, Options are ⇒ (A) Y - Y and Y - Y transformers, (B) Δ - Δ and Δ - Δ transformers, (C) Y - Y and Y - Δ transformers, (D) Y - Δ and Y - Δ transformers, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	For a 12 pulse operation, the two 6 pulse units are fed by
A.	Y - Y and Y - Y transformers [Wrong Answer]
B.	Δ - Δ and Δ - Δ transformers [Wrong Answer]
C.	Y - Y and Y - Δ transformers [Correct Answer]
D.	Y - Δ and Y - Δ transformers [Wrong Answer]
View Answer 2 -2 Explanation:- Answer : C Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ If the transmission parameters of the given networks are A = C = 1, B = 2 and D = 3, then the value of Z_{m12/13 Ω
13/12 Ω
3 Ω
4 Ω}

⇒ In FM, the frequency deviation is
always constant
directly proportional to modulating frequency
inversely proportional to modulating frequency
proportional to amplitude of modulating signal

⇒ A delay equalizer is a
low pass filter
band pass filter
all pass filter
high pass filter

⇒ Symbol shown in figure represen
P-channel enhancement MOSFET
N-channel DEMOSFET
UJT with P-type base
UJT with N-type base

⇒ Giga watt is equal to
10¹² W
10⁹ W
10⁶ W
10³ W

⇒ Space communication links are being increasingly moved into Ka-band (200-30 GHz) because it
offers a much wider available bandwidth
does not suffer from atmospheric at tenuation
permits the use of smaller antenna
does not suffer from rain attenuation

⇒ For the two port of figure, z_{2226/7 Ω
6/7 Ω
2/3 Ω
1 Ω}

⇒

Assertion (A): In high Q circuits poles of Y(s) lie close to ω axis in complex frequency plane.

Reason (R): Q is inversely proportional to damping factor.

Both A and R are true and R is correct explanation of A
Both A and R are true and R is not the correct explanation of A
A is true but R is false
A is false but R is true

⇒ What will be equipotential surfaces for a pair of equal and opposite line charges?
Spheres
Concentric cylinders
Non-concentric cylinders
None of the above

⇒ When one operand is real and one integer in Pascal, which of the following operations are not allowed?
+ and -
*
/
Div and Mod

⇒ A sequence detector is required to give a logical output of 1 whenever the sequence 1011 is detected in the incoming pulse stream. Minimum number of flip-flops needed to built the sequence detector is
4
3
1
2

⇒ As per Hall effect, if any specimen carrying a current I is applied in a transverse magnetic field B, then an electric field E is induced in the specimen in the direction.
parallel to I
perpendicular to B and parallel to I
parallel to I and B
perpendicular to both I and B

⇒ Magnetic effect of current is used in
ammeters
voltmeters
wattmeters
ammeters, voltmeters, wattmeters and energy meters

⇒ In a N-P-N transistor of the emitter junction is reverse biased and collector junction is also reversed biased, the transistor will operate in
active region
saturation region
cut-off region
inverted region

⇒ An electron (charge -e) is rotating in a circular orbit of radius R, around a proton with charge +e at a constant angular velocity ω. The orbital magnetic dipole moment is
0.5 eω R²
eω R²
2 eω R²
0.5 eω R³

⇒ A dc power supply has no load voltage of 30 V and full load voltage of 25 V at full load current of 1 A. The output resistance and voltage regulation respectively are
5 Ω and 25%
25 Ω and 20%
5 Ω and 16.7%
25 Ω and 16.7%

⇒ A 400 W carrier is amplitude modulated with m = 0.75. If single side band suppressed carrier is used the total power in modulated wave is
400 W
512 W
112 W
56 W

⇒ Consider the network: Impedance of this network as a function of the complex frequency is consists of a certain number of zeros and poles. What is the location of po
-2
-2, ∞
2
2, ∞

⇒ Which of the following is not a transducer in true sense?
Thermocouple
Piezo electric
Photo electric cell
LCD

⇒ Double integration of unit step function leads to
an impulse
a parabola
a ramp
a doublet

⇒ Which two rows represent identical binary numbers?
A second and fourth
Fifth and eight
Third and seventh
Second and third

⇒ The noise sources shot noise, partition noise and thermal noise are associated with which component
BJT
diode
resistor
capacitor

⇒ Which of the following is also called Non volatile RAM?
Shadow RAM
UVEPROM
EEPROM
Both (b) and (c)

⇒ The total insulation resistance consists of insulation volume resistance and surface leakage resistance.
TRUE
FALSE

⇒ Race condition always arises in
synchronous circuit
asynchronous circuit
combinational circuit
digital circuit

⇒ The colour of an object is decided by
the reflected colour
the wavelength transmitted through it
reflected colour for opaque object and wavelength transmitted through it for transparent objects
none of the above

⇒ The output of a half adder is
SUM
CARRY
SUM and CARRY
none of the above

⇒ In a two stage CE amplifier circuit, the ac collector resistance of the first stage depends on
load resistance
input impedance of first stage
input impedance of second stage
all of the above

⇒

Assertion (A): The access time of memory is lowest in the case of DRAM

Reason (R): DRAM uses refreshing cycle.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is true, R is false
A is false, R is true

⇒ In a circuit of figure, V_s = 10 cos(ωt) power drawn by the 2Ω resistor is 4 watts. The power facto
0.3
0.4
0.6
none