# Recent questions tagged series

Series rc circuits

Series circuit rules

X L and X C in Series

Series and parallel capacitor problem

Describe the reason of using dc series motor for electric trains.

State the principle of solar cell. What is necessity of series and parallel connection of solar cells.

State the use of shunt and series resistance used in extension of meter.

State necessity of series connection and parallel connection of batteries.

An independent voltage source in series with an impedance ZS=R+jXS delivers a maximum average power to a load impedance ZL when A) ZL = R B) ZL = jXS C) ZL = R-jXS D) ZL = R+jXS

An inductor is connected in series with SCR to protect it from A) Excessive high voltage B) Excessive high dv/dt C) Excessive high di/dt D) Excessive large forward current

In a series R-C circuit, with the increase in frequency, current (A) Reduces (B) Increases (C) Does not change (D) Becomes zero

A series R-L-C Circuit has a resonant frequency of 1000 Hz. If the values of R, L and C are doubled, the new resonant frequency is

Two 100W, 200V lamps are connected in series across a 200V supply. The total power consumed by each lamp will be in Watts

We connected a 35V dc supply to a resistance of 600 Ohm in series with an unknown resistance R.A. voltmeter having a resistance of 1.2 kOhm is connected across 600 Ohm resistance and read 5v. The value of resistance R will be

In an ac series RLC circuit, the voltage across R and L is 20 V; voltage across L and C is 9 V and voltage across RLC is 15 V. What is the voltage across C?

In a 2 kW, 200 V, 1000 rpm. DC series motor the torque at full load was found to be 0.3 N -m. The torque at half full load in N -m is :

A DC voltage source is connected across a series RLC circuit. Under steady-state conditions, the applied DC voltage drops entirely across the

In a series RLC high Q circuit, the current peaks at a frequency  (1) equal to the resonant frequency (2) greater than the resonant frequency (3) less than the resonant frequency (4) equal to half the resonant frequency

Series capacitive compensation in EHV transmission line is used to

Consider a circuit with four resistors in series connected to a voltage source. What happens to the voltage across each resistor, if the value of each of the resistors is doubled? A) It will double B) It will remain the same C) It will be halved D) It will become zero

What is the RMS voltage in a series RL circuit, if the voltage across R and L is 256 V and 192 V respectively? A) 320 V B) 448 V C) 64 V D) None of these

What is the total resistance if 5 resistors of 20 Ω each are connected in series? A) 100 Ω B) 4 Ω C) 20 Ω D) None of these

Which of the following is true with a series circuit having resistors of different values? A) The total resistance of the circuit is the sum of the individual resistances B) The current across each resistor is the same C) The voltage drop across each resistor depends on the value of the resistor D) All the above

Series reactors are used to

A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will?

Two resistances Rl and Ri are connected in series across the voltage source where Rl>Ri. The largest drop will be across?

In a series circuit with unequal resistances?

Two resistors are said to be connected in series when?

The series and parallel resonance on L-C circuit differs in that?

At very low frequencies a series R-C circuit behaves as almost purely?

If resistance is 20 Q. and inductance is 27 in a R-L series circuit, then time constant of this circuit will be?

The time constant of a series R-C circuit is given by?

In a series L-C circuit at the resonant frequency the?

In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of?

In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value?

In a series resonant circuit, the impedance of the circuit is?