Tata Steel JET Electrical [Part -4] - 2025

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(1) A square matrix is called singular if its

The Determinant Is 1
The Determinant Is 0
The Determinant Is Infinity
None Of These

(2) Permanent magnets are used in

Loudspeakers
Motors
Both 1 & 2
Generators

(3) The piezoelectric effect is carried out in

Constant K Prototype
Composite Filter
Crystal Filter
M Derived

(4) Radiation from a body is proportional to

T^2
T^3
T^4
T^5

(5) Induction hardening is possible in case of

Ferrous Material.
Non-ferrous Material.
AC Supply Only
DC Supply Only

(6) What will be the total flux emitted by a source of 60 candle power?

60 Lumens.
150.5 Lumens.
754.2 Lumens
900 Lumens.

(7) 8085 microprocessor has how many pins

25
30
35
40

(8) Colpitts oscillator is also called as

Resonant Circuit Oscillator
LC Oscillator
Tank Circuit Oscillator
All Of The Above

(9) For emitter bias, the voltage at the emitter is 0.7 V less than the

Ground Voltage
Collector Voltage
Base Voltage
Emitter Voltage

(10) When the current gain increases from 50 to 300 in an emitter-biased circuit, the collector current

Remains Almost The Same
Reduced By A Factor Of 6
Hikes By A Factor Of 6
Zero