Odisha PSC Assistant Engineer Electrical Paper 2012-13

Odisha Public Service Commission Assistant Engineer Electrical Paper 2012-13

In a series RLC circuit, the rms value of voltage across the resistor is 30V, across the inductor is 60V and across the capacitor is 20 V. The rms supply voltage would be
(a) 110 V
(b) 010 V
(c) 220 V
(d) 050 V

Production of heat due to electric current is related to
(a) Ohm’s law
(b) Joule’s law
(c) Kelvin’s law
(d) Maxell’s law

What would be the impedance of a circuit having resistance of 3 ohms, inductive reactance of 8 ohms and capacitive reactance of 4 ohms?
(a) 15 Ohms
(b) 5 Ohms
(c) 0.5 Ohms
(d) 10 Ohms

In two-wattmeter method of power measurement, if one wattmeter shows negative reading, then the power factor of the circuit is treated as
(a) Unity
(b) Lagging
(c) Leading
(d) zero

The phenomena of creeping occurs in
(a) Ammeter
(b) Voltmeter
(c) Wattmeter
(d) Energy meter

An electro-dynamic wattmeter is not considered suitable for low power factor circuits because of
(a) Inductance of voltage coil
(b) Reactance of current coil
(c) Power loss in voltage coil
(d) Power loss in current coil

The internal resistance of an ideal voltage source is
(a) Zero
(b) Infinity
(c) A finite value
(d) None of the above

Which of the following insulator is used for high frequency applications?
(a) Stealite
(b) Forsterite
(c) Bakelite
(d) Porcelain

What would be the time taken by the current to reach half of its final value in a coil having R=10 Ohms and L=10H, when a D.C voltage of 100 V is applied
(a) 0.69 sec
(b) 6.9 sec
(c) 0.5 sec
(d) 5.2 m sec.

Which of the following is not a non-linear element?
(a) Diode
(b) Transistor
(c) Heater coil
(d) None of the above

A load cell essentially represents a
(a) Thermocouple
(b) Thermistor
(c) Photo-conductive device
(d) Strain gauge

Hall effect transducers are generally used for the measurement of
(a) Magnetic field
(b) Current
(c) Electric field
(d) Pressure