Electromagnetic waves transport:
A. Energy
B. Momentum
C. Mass
D. Heat
A changing magnetic flux produces around itself an induced:
A. Magnetic field
B. Electric field
C. Electromagnetic force
D. Artificial gravitational field
Waves emitted from the antenna are:
A. Sound waves
B. Electromagnetic waves
C. Radio waves
D. Modulated waves
Ammeter connected in an AC circuit measures:
A. The exact value of the current
B. RMS value of the current
C. The net value of the current
D. The peak value of the current
In the capacitive circuit the current:
A. Lags behind voltage by π/2
B. Is in phase with voltage
C. Opposite in phase of voltage by π
D. Leads forward the voltage by π/2
pure resistor circuit the voltage and current are:
A. Lagging each other
B. They are at 90? phase difference
C. They have zero phase difference
D. No phase difference
At resonance the value of the power factor in an L-C-R series circuit is:
A. Zero
B. 2
C. 1
D. Not definite
A choke is used as a resistance in:
A. DC circuit
B. AC circuits
C. Both AC and DC circuit
D. Full wave rectifier circuit
The frequency of a circuit consisting of a capacitance C and a resistor R is:
A. C/R
B. R/C
C. 1/RC
D. 1/ 2RC
Maximum number of components of a vector may be:
A. 1
B. 2
C. 3
D. Infinite
