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# Single Phase Series Circuits Online Exam Quiz

Important questions about Single Phase Series Circuits. Single Phase Series Circuits MCQ questions with answers. Single Phase Series Circuits exam questions and answers for students and interviews.

Options

A : a. a

B : b. b

C : c. c

D : d. d

### Which type of ac waveform is given in figure?

Options

A : a. sinusoidal

B : b. triangular

C : c. square

D : d. complex waveform

### Instantaneous voltage is the product of resistance and _____________ current in a resistive circuit.

Options

A : a. Instantaneous

B : b. Average

C : c. RMS

D : d. Peak

Options

A : a. 5V

B : b. 2V

C : c. 10V

D : d. 2.5V

### The power for a purely resistive circuit is zero when?

Options

A : a. Current is zero

B : b. Voltage is zero

C : c. Both current and voltage are zero

D : d. Either current or voltage is zero

Options

A : a. 1A

B : b. 2A

C : c. 3A

D : d. 4A

Options

A : a. 2 ohm

B : b. 5 ohm

C : c. 10 ohm

D : d. 20 ohm

### The correct expression for the instantaneous current in a resistive circuit is?

Options

A : a. i=Vm(sint)/R

B : b. i=Vm(cost)/R

C : c. i=V(sint)/R

D : d. i=V(cost)/R

### Can ohm’s law be applied in an ac circuit?

Options

A : a. Yes

B : b. No

C : c. Depends on the rms current

D : d. Depends on the rms voltage

### The correct expression for the instantaneous current if instantaneous voltage is Vm(sint) in an inductive circuit is?

Options

A : a. i = Vm(sint)/X?

B : b. i = Vm(cost)/X?

C : c. i = -Vm(sint)/X?

D : d. i = -Vm(cost)/X?

### Inductor does not allow sudden changes in?

Options

A : a. Voltage

B : b. Current

C : c. Resistance

D : d. Inductance

### Inductance is _____________________ to number of turns in the coil.

Options

A : a. directly proportional

B : b. inversely proportional

C : c. equal

D : d. not related

### Choke involve use of _____________

Options

A : a. Resistor

B : b. Capacitor

C : c. Inductor

D : d. Transistor

### What is the value of current in an inductive circuit when there is no applied voltage?

Options

A : a. Minimum

B : b. Maximum

C : c. Zero

D : d. Cannot be determined

### What is the current in an inductive circuit when the applied voltage is maximum?

Options

A : a. Infinity

B : b. Maximum

C : c. Zero

D : d. Cannot be determined

### In an inductive circuit, the voltage_______ the current?

Options

B : b. Lags

C : c. Is greater than

D : d. Is less than

### In an inductive circuit, the current________ the voltage?

Options

B : b. Lags

C : c. Is greater than

D : d. Is less than

### In which device inductor cannot be used?

Options

A : a. filter circuit

B : b. transformer

C : c. choke

D : d. dielectric

Options

A : a. 2.2A

B : b. 4.2A

C : c. 6.2A

D : d. 8.2A

### Which, among the following, is the correct expression for ?.

Options

A : a. ?=tan¯¹ (XL/R)

B : b. ?=tan¯¹ (R/XL)

C : c. ?=tan¯¹ (XL*R)

D : d. ?=cos¯¹ (XL/R)