SSC JE Electrical Engineering 27th Jan 2018 Shift-2
For the following questions answer them individually
Ammeter and voltmeter are connected across the load in _______ and _______ respectively.
The deflection sensitivity of the CRO is 10 m/V. What is the value of deflection factor (in V/m)?
The current required for full scale deflection of a voltmeter is 10 mA. Find the sensitivity (in ohms/V) of the voltmeter.
Calculate the fastest rise time (in ms) a sine wave can have to be reproduced by a CRO, if the bandwidth ranges from 0 Hz to 10 Hz.
Which of the following is NOT the correct representation of the balanced condition of AC bridges?
A 10 mA meter having an internal resistance of 100 Ohms is to be converted to 0-200 mA ammeter. What value of shunt resistance (in ohms) is required?
A 3 phase - 110 V motor has a power factor of 0.5. The two wattmeters connected measure the total input of 50 kW. Calculate the reading (in kW) of each wattmeter.
The inductance of a moving iron instrument is $$ (10 + 6 \theta) \mu H $$, where $$ \theta $$ deflection in radian from zero position. Assuming spring constant $$ k = 10 \times 10^-6 Nm/rad, $$ the deflection (in rad) for a current of 6 A is __________.
What will happen to the operating torque of moving iron instrument, if current through the operating coil is halved?
