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Q1. | In single phase half wave regulator, the average current over one full cycle |

A. | is always positive [Wrong Answer] |

B. | may be positive or negative [Wrong Answer] |

C. | may be negative [Wrong Answer] |

D. | is always negative [Correct Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ Consider the following digital circu

1 and 2

3 and 4

1, 2 and 3

1, 2, 3 and 4

⇒ The distance at which a sky wave is received back on earth decreases with angle of incidence for all angles of incidence.

TRUE

FALSE

⇒ An ac network has two sources of the same frequency. The currents in one branch when the sources act independently are 10 ∠30° A and 10 ∠60° A. When both sources act, the current in the branch should be

19.32 ∠45°

15 ∠45°

20 ∠45°

zero

⇒ Which one of the following rules determines the mapping of

*s*-plane to

*z*-plane?

Right half of the s-plane maps into outside of the unit circle in

*z*-plane

Left half of the

*s*-plane maps into outside of the unit circle.

Imaginary axis in

*s*-plane maps in to the circumference of the unit circle.

All of the above

⇒ The input to negative clamper has a peak value of V

_{p}. Then in the output the positive and negative peaks are nearly

0 and -2 V respectively

V

_{p}and -V

_{p}respectively

2 V

_{p}and 0 respectively

none of the above

⇒

**Assertion (A):** The response of a network to unit impulse can be obtained directly from the network function.

**Reason (R):** The response of a network for any input can be obtained from impulse response.

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

⇒ A dynamometer wattmeter is connected in ac circuit. The reading will be

V-A product

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peak power

instantaneous power

⇒ Maximum power transfer theorem is applicable to circuits with one source only.

TRUE

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⇒ For a second order system delay time

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none of the above

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faster dissipation of heat to atmosphere

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⇒ The equivalent form of the logical expression ABC + A BC + ABC + ABC + AB C is

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(A + B + C)(A + B + C)(A + B + C)

⇒ The equivalent circuit of an op-amp has

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none of the above

⇒ A feedback network to be used with an amplifier to provide oscillation is tested and found to give an output of 0.124 V with a 0.5 V input. What percentage negative feedback should be introduced to the amplifier so that linear oscillations result?

0.0125

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⇒ In a 4 bit ripple counter using flip flops with

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⇒ The current wave of figure, is passed through a 3 H inductor during the period 0 to 2 sec

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By using de-emphasis circuit

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⇒ The divergence of the electric field intensity at any point equals

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l/ε

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ε

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⇒ A generator with an internal resistance of 600 Ω drives an amplifier whose input resistance is 400 Ω. The generator's open circuit voltages is 1 mV; the amplifier develops 100mV across an 8kΩ load. The input voltage to the amplifier is

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4 m V

⇒ Precisely 1 K byte means

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⇒ A low-pass filter frequency responce H (

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⇒ For VLF antennas radiation resistance is usually of the order of

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Mica

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⇒ The symbol in figure is

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⇒ Two coils X of 1000 turns and Y of 2000 turns are placed such that 60% of the flux produced by coil X links coil Y. A current of 1 A in coil X produces 0.1 wb flux. The mutual inductance between coils is

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⇒ The units of thermal capacitance are

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⇒ In radar system if the antenna diameter is increased by a factor of 4, the minimum range will increased by a factor of

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⇒ Stepper motors find applications in

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numerically controlled machining equipment

printers

all of the above

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directly proportional to gain constant

inversely proportional to gain constant

independent of gain constant