CBET MOCK TEST QUESTIONS WITH 100% CORRECT
ANSWERS 2025/2026
Which instruments is used to measure current without breaking the circuit? -- Answer
✔✔ Clamp-on Amp meter
Which standard defines the format for radiographic imaging in hospital environment? --
Answer ✔✔ DICOM
Blood gas analyzer measures functions but parameters are out of range. What should
you do first?
A) Replace buffer solution
B) Replace test samples
C) Normal operation
D) Clean pO2 probe -- Answer ✔✔ Replace buffer solution
What should a tech do before using rechargeable batteries? -- Answer ✔✔ Fully
discharge
Water bath's temperature is not rising but power indicator is on. What could be
wrong? -- Answer ✔✔ Heating element bad
Phase relation between current and voltage for pure resistive circuit is: -- Answer ✔✔
In phase
Relation between Voltage (V) and Inductance (L):
Directly proportional
Inversely proportional -- Answer ✔✔ Directly proportional
, Calculate the impedance (Z) if resistance (R) is 2k ohm, capacitance (C) is 20uF,
inductance (L) is 100mH, and frequency (f) is 10k Hz.
Inductive Reactance (XL) = 2πfL = 2 * π* 10000 * 0.1 = 6, 283.185
Capacitive Reactance (XC) = 1 / (2πfC) = 1 / (2π * 10000 * 0.00002)= 795.78 ohm
Net Reactance (X) = XL-XC = 6, 283.185 - 795.775 = 5487.41
Z = R2 + X2 = 20002 + 5487.412 = 5840.52 ohm
-- Answer ✔✔ 5840.52 ohm
Calculate the power (P) if Voltage (V) is 3v and resistance (R) is 9 Ω.
V = 3v
R=9Ω
V2 = 32 = 9
P = 9/9 = 1 Watt
-- Answer ✔✔ 1 Watt
Calculate Vout if Vin is -3v, Rf is 2K Ω, and R1 is 1K Ω.
Vout = - (Rf/R1) * Vin,
Vin = -3v
Rf = 2000 Ω
Vout = - (2000/1000) * -3V
Vout = -2 * -3V = 6V
-- Answer ✔✔ 6V
A graph of temperature history for a month for a refrigerator is provided. If it shows
the temperature is going up day by day, what could be the cause of the temp rise? --
Answer ✔✔ Coolant was leaking
What alternative method can be used if ECG signal is unavailable during an IABP
procedure? -- Answer ✔✔ Use arterial pressure
What can happen if defib paddles are pitted? -- Answer ✔✔ burns
Patient complains about burning sensation during an ultrasound therapy. Cause: --
Answer ✔✔ Cracked probe crystal
ANSWERS 2025/2026
Which instruments is used to measure current without breaking the circuit? -- Answer
✔✔ Clamp-on Amp meter
Which standard defines the format for radiographic imaging in hospital environment? --
Answer ✔✔ DICOM
Blood gas analyzer measures functions but parameters are out of range. What should
you do first?
A) Replace buffer solution
B) Replace test samples
C) Normal operation
D) Clean pO2 probe -- Answer ✔✔ Replace buffer solution
What should a tech do before using rechargeable batteries? -- Answer ✔✔ Fully
discharge
Water bath's temperature is not rising but power indicator is on. What could be
wrong? -- Answer ✔✔ Heating element bad
Phase relation between current and voltage for pure resistive circuit is: -- Answer ✔✔
In phase
Relation between Voltage (V) and Inductance (L):
Directly proportional
Inversely proportional -- Answer ✔✔ Directly proportional
, Calculate the impedance (Z) if resistance (R) is 2k ohm, capacitance (C) is 20uF,
inductance (L) is 100mH, and frequency (f) is 10k Hz.
Inductive Reactance (XL) = 2πfL = 2 * π* 10000 * 0.1 = 6, 283.185
Capacitive Reactance (XC) = 1 / (2πfC) = 1 / (2π * 10000 * 0.00002)= 795.78 ohm
Net Reactance (X) = XL-XC = 6, 283.185 - 795.775 = 5487.41
Z = R2 + X2 = 20002 + 5487.412 = 5840.52 ohm
-- Answer ✔✔ 5840.52 ohm
Calculate the power (P) if Voltage (V) is 3v and resistance (R) is 9 Ω.
V = 3v
R=9Ω
V2 = 32 = 9
P = 9/9 = 1 Watt
-- Answer ✔✔ 1 Watt
Calculate Vout if Vin is -3v, Rf is 2K Ω, and R1 is 1K Ω.
Vout = - (Rf/R1) * Vin,
Vin = -3v
Rf = 2000 Ω
Vout = - (2000/1000) * -3V
Vout = -2 * -3V = 6V
-- Answer ✔✔ 6V
A graph of temperature history for a month for a refrigerator is provided. If it shows
the temperature is going up day by day, what could be the cause of the temp rise? --
Answer ✔✔ Coolant was leaking
What alternative method can be used if ECG signal is unavailable during an IABP
procedure? -- Answer ✔✔ Use arterial pressure
What can happen if defib paddles are pitted? -- Answer ✔✔ burns
Patient complains about burning sensation during an ultrasound therapy. Cause: --
Answer ✔✔ Cracked probe crystal
