The equivalent resistance of two resistors connected in series is 6 Ω and their parallel equivalent resistance is 4/3Ω. What are the values of resistances?
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(a) 4Ω,6Ω (b) 8Ω,1Ω (c) 4Ω,2Ω (d) 6Ω,2Ω
The average power dissipated in AC circuit is 2 W. If a current flowing through a circuit is 2 A, impedance is 1Ω, then what is the power factor of the circuit?
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A step-down transformer has 50 turns on secondary and 1000 turns on primary winding. If a transformer is connected to 220 V, 1 A AC source, then what is output current of the transformer?
A circular coil of radius 10cm and 100 turns carries a current 1 A. What is the magnetic moment of the coil?
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(a) 3.142×10⁴ A-m² (b) 10⁴ A-m² (c) 3.142 A-m² (d) […]
A charged particle experiences magnetic force in the presence of magnetic field. Which of the following statement is correct?
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(a) The particle is moving and magnetic field is perpendicular to the velocity […]
A tuned amplifier circuit is used to generate a carrier frequency of 2 MHz for the amplitude modulation. The value of √LC is
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(a) 1/2πx10⁶ (b) 1/2×10⁶ (c) 1/3πx10⁶ (d) 1/4πx10⁶
Correct […]
A microscope is having objective of focal length 1 cm and eye-piece of focal length 6 cm. If tube length is 30 cm and image is formed at the least distance of distinct vision, what […]
A carbon film resistor has colour code green, black, violet, gold. The value of the resistor is
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(a) 50Ω (b) 500Ω (c) 500±5%MΩ (d) 500±10%Ω
Correct Answer:
500±5%MΩ
Explanation:
No explanation available. […]
A series L-C-R circuit contains inductance 5 mH, capacitance 2 μF and resistance 10Ω. If a frequency AC source is varied, then what is the frequency at which maximum power is dissipated?
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