1 Crore+ students have signed up on EduRev. Have you? 
In an ac circuit, V and I are given by V = 100 sin 100t volts, I = 100 sin The power dissipated (in Watts) in circuit is
The correct answer is: 2.5
In the circuit shown below, the ac source has voltage V = 20cos(ωt) Volts with ω = 2000 the amplitude of the current (in Amperes) will be nearest to
The correct answer is: 2
The power factor of a good choke coil is nearly.
Power factor of a good choke coil is 0
The correct answer is: 0
A coil of 200Ω resistance and 1.0H inductance to an ac source of frequency 200/ 2π Hz. Phase angle (in degree) between potential and current will be
The correct answer is: 45
When 100V D.C. is applied across solenoid a current of 1.0A flows in it. When 100 V A.C. is applied across the same coil the current drops to 0.5A. If the frequency of the A.C. source is 50Hz, the impedance (in Ω) of the solenoid is.
The correct answer is: 200
In the figure shown, a current of 2A flows in the circuit. The impedance (in Ω) of the circuit is
The correct answer is: 130
In an ac circuit the current is given by i = 0.5sin(314t + 60º)mA. The peak to peak value of current is (in mA).
Peak to Peak value of current is 1mA
The correct answer is: 1
A steady dc current of 2.83A is flowing in a resistance wire. The rms value of the current (in Amperes) is :
The rms value of the current is 2.83A
The correct answer is: 2.83
In series LCR circuit the voltage across R, L and C are shown in figure. The Voltage (in Volts) of applied source is :
The correct answer is: 50
The power factor of LCR circuit at resonance is
Power Factor of LCR circuit at resonance is 1
The correct answer is: 1
Use Code STAYHOME200 and get INR 200 additional OFF

Use Coupon Code 








