Q.526 Phase difference between the output and input voltage of common Emitter Amplifier is
A. 180°
B. 0°
C. 270°
D. 90°
Ans.: A
Q.527 A series capacitor used in a filter circuit represent
A. low pass filter
B. Band pass filter
C. High pass filter
D. None
Ans.: C
Q.528 The Intel 8086 microprocessor is a _____bit processor
A. 8
B. 16
C. 32
D. 4
Ans.: B
Q.529 The intrinsic impedance of free space is
A. 75 ohm
B. 150 ohm
C. 377 ohm
D. 400 ohm
Ans.: C
Q.530 The characteristic impedance is given by
(Zoc- open circuit Impedance
Zsc – short circuit Impedance)
A. √Zoc/ Zsc
B. Zoc/Zsc
C. √Zoc.Zsc
D. √Zsc/Zoc
Ans.: C
Q.531 When bundled conductor are used in-place of single conductor, the effective inductance and corona loss will respectively,
A. Increase and Decrease
B. Decrease and Decrease
C. Increase and Increase
D. Depends on the system
Ans.: B
Q.532 Following circuit will produce____ output when A= 0 and B= a.
A. S = 0, C = 1
B. S = 1, C= 0
C. S = 0, C = 0
D. S= 1, C = 1
Ans.: B
Q.533 For a purely capacitive circuit a sudden jump (step input) in the voltage requires ___current.
A. Zero
B. Infinite
C. Unity
D. None of the above
Ans.: B
Q.534 SCR is considered to be a semi-controlled device because
A. It can be turned off but not on with gate pulse
B. It conducts only during one half cycle of an alternating current
C. It can be turned on only during one half-cycle of an alternating voltage wave
D. It can be turned ON but not OFF with a gate pulse
Ans.: D
Q. 535 Primary of transformer is energized by voltage source of rated value and its secondary is open. The value of power factor as seen by the source is
A. Nearly unit, lagging
B. Nearly unity, leading
C. Less than 0.5, lagging
D. Less than 0.5, leading
Ans.: C
Q.536 Switchgear equipment include
A. Switches
B. Fuses
C. Relays and circuit breakers
D. All of the above
Ans.: D
Q.537 Fusing factor is defined as
A. Minimum fusing current
B. Current rating of fusing element
C. ratio of A and B
D. ratio of B and A
Ans.: C
Q.538 What will happen to active power and reactive power if power factor is changed from unity?
A. Increases, decreases respectively
B. decreases, increases respectively
C. remains same
D. Can’t say, data not sufficient
Ans.: B
Q.539 Following gate is an universal date
A. AND
B. NAND
C. OR
D. None of the above
Ans.: B
Q.540 The number of branches on a tree of a graph is ____ the number of nodes of the graph.
A. one less than
B. one more than
C. two less than
D. same as
Ans.: A