Temperature co-efficient of resistance is expressed in terms of___________?
Temperature co-efficient of resistance is expressed in terms of___________?
A. ohms/°C
B. mhos/ohm°C
C. ohms/ohm°C
D. mhos/°C
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1 angstrom is equal to______________?
1 angstrom is equal to______________?
A. 10-8 mm
B. 10″6 cm
C. 10″10 m
D. 10~14 mA thermistor has_____________?
A thermistor has_____________?
A. positive temperature coefficient
B. negative temperature coefficient
C. zero temperature coefficient
D. variable temperature coefficientMagnetic flux has the unit of
Magnetic flux has the unit of
A. Newton
B. Ampere-turn
C. Weber
D. TeslaThe unit of magnetic flux is called Weber in honor of famous scientist Wilhelm Eduard Weber (1804 – 1891). Magnetic flux has also another unit named Maxwell. 1 Maxwell = 10-8 Weber.
Two lamps 100 W and 40 W are connected in series across 230 V (alternating). Which of the following statement is correct ?
Two lamps 100 W and 40 W are connected in series across 230 V (alternating). Which of the following statement is correct ?
A. 100 W lamp will glow brighter
B. 40 W lamp will glow brighter
C. Both lamps will glow equally bright
D. 40 W lamp will fuseA 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will__________
A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will__________
A. decrease
B. increase
C. remain same
D. heater will burn outAll good conductors have high____________?
All good conductors have high____________?
A. conductance
B. resistance
C. reluctance
D. thermal conductivity