Explore topic-wise MCQs in Engineering.

When converting 7,000 nA to microamperes, the result is

A wiper is the sliding contact in a

The first row of a certain determinant has the numbers 3 and 5. The second row has the numbers 7 and 2. The value of this determinant is

What is the voltage drop across R₂?

A resistor is connected across a 50 V source. What is the current in the resistor if the color code is red, orange, orange, silver?

The quantity 3.3 10³ is the same as

When 12 V are applied across a 68 resistor, the current is

A certain series circuit consists of a 1/8 W resistor, a 1/4 W resistor, and a 1/2 W resistor. The total resistance is 1200 . If each resistor is operating in the circuit at its maximum power dissipation, total current flow is

If the rms current through a 4.7 k resistor is 4 mA, the peak voltage drop across the resistor is

The Thevenin equivalent voltage is

The voltages in Problem 4 are measured at a certain frequency. To make the capacitor voltage greater than the resistor voltage, the frequency

Polyphase generators produce simultaneous multiple sinusoidal voltages that are separated by

The conductive loop on the rotor of a simple two-pole, single-phase generator rotates at a rate of 400 rps. The frequency of the induced output voltage is

When the current through an inductor decreases, the amount of energy stored in the electromagnetic field

Referring this circuit, determine the maximum output voltage when a single pulse is applied as shown. The total resistance is 60 .

Sine wave A has a positive-going zero crossing at 45 . Sine wave B has a positive-going zero crossing at 60 . Which of the following statements is true?

An 18 V power supply is connected across a coil with a winding resistance of 180 . Current flow in the coil is

The average value of a 12 V peak sine wave over one complete cycle is

If in a Y-connected ac generator, each phase voltage has a magnitude of 90 V_RMS, what is the magnitude of each line voltage?

In a certain series resonant circuit, V_C = 125 V, V_L = 125 V, and V_R = 40 V. The value of the source voltage is

In applying the superposition theorem,

In order to get maximum power transfer from a capacitive source, the load must

A steady-state condition is reached when

Referring to the give circuit, the output will

A single 6 V pulse with a width of 600 s is applied to an integrator consisting of a 150 k resistor and a 0.002 F capacitor. To what voltage will the capacitor charge?

To understand how the output voltage is shaped by a differentiator, you must consider

In an integrator, when the pulse width of the input is much less than the transient time, the output voltage approaches the shape of the input.

In an RC differentiating circuit, the output voltage is taken across the resistor.

If the capacitor in an integrator opens, the output has the same voltage as the input.

The flat portions of a pulse waveform contain low-frequency components.

In an RC integrating circuit, the output voltage is taken across the capacitor.

In an RL differentiating circuit, the output voltage is taken across the resistor.

A dc component is the peak value of a pulse waveform.

A 120 resistor must carry a maximum current of 25 mA. Its rating should be at least

The rising and falling edges of a pulse waveform contain the higher frequency component.

In an electric circuit, the reaction of a circuit to a given pulse input is known as the pulse response.

In a -connected generator, all of the phase voltages are

Materials with lots of free electrons are called

Eight-tenths coulomb passes a point in 4 s. The current in amperes is

Three 47 resistors are connected in parallel across a 110 volt source. The current drawn from the source is approximately

If a 24 V and a 6 V battery are series opposing, the total voltage is

The unit of electrical charge is the

How much voltage is needed to produce 2.5 A of current through a 200 resistor?

An ohmmeter is an instrument for measuring

Current flows in a circuit when

Five light bulbs are connected in parallel across 110 V. Each bulb is rated at 200 W. The current through each bulb is approximately

When a 15 V input pulse with a width equal to two time constants is applied to an RC integrator, the capacitor charges to

An integrator consists of a 3.3 k resistor and a 2 F capacitor. A single 30 V, 6 ms pulse is applied to the input. How much will the capacitor charge?

With an RL integrator, at the instant of the rising pulse edge,

When a 12 V input pulse with a width equal to one time constant is applied to an RC integrator, the capacitor charges to